/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 14:40:50,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 14:40:50,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 14:40:50,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 14:40:50,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 14:40:50,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 14:40:50,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 14:40:50,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 14:40:50,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 14:40:50,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 14:40:50,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 14:40:50,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 14:40:50,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 14:40:50,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 14:40:50,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 14:40:50,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 14:40:50,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 14:40:50,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 14:40:50,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 14:40:50,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 14:40:50,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 14:40:50,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 14:40:50,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 14:40:50,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 14:40:50,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 14:40:50,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 14:40:50,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 14:40:50,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 14:40:50,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 14:40:50,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 14:40:50,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 14:40:50,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 14:40:50,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 14:40:50,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 14:40:50,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 14:40:50,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 14:40:50,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 14:40:50,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 14:40:50,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 14:40:50,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 14:40:50,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 14:40:50,319 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 14:40:50,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 14:40:50,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 14:40:50,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 14:40:50,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 14:40:50,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 14:40:50,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 14:40:50,361 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 14:40:50,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 14:40:50,361 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 14:40:50,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 14:40:50,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 14:40:50,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 14:40:50,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 14:40:50,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 14:40:50,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 14:40:50,363 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 14:40:50,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 14:40:50,364 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 14:40:50,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 14:40:50,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 14:40:50,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 14:40:50,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 14:40:50,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 14:40:50,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:40:50,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 14:40:50,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 14:40:50,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 14:40:50,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 14:40:50,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 14:40:50,366 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 14:40:50,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 14:40:50,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 14:40:50,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 14:40:50,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 14:40:50,687 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 14:40:50,688 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 14:40:50,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 14:40:51,816 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 14:40:52,092 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 14:40:52,093 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 14:40:52,107 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3141aa64/99e5f3e8ecad4f8f9f7cd1b8956c3dba/FLAGf4b43c744 [2022-12-12 14:40:52,121 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3141aa64/99e5f3e8ecad4f8f9f7cd1b8956c3dba [2022-12-12 14:40:52,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 14:40:52,125 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 14:40:52,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 14:40:52,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 14:40:52,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 14:40:52,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:40:52" (1/1) ... [2022-12-12 14:40:52,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c53a41d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:52, skipping insertion in model container [2022-12-12 14:40:52,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:40:52" (1/1) ... [2022-12-12 14:40:52,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 14:40:52,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 14:40:52,360 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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-12 14:40:52,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,532 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,533 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,534 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,534 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,537 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:40:52,547 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 14:40:52,560 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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-12 14:40:52,585 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,594 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,599 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,599 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,599 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:52,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:52,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:40:52,646 INFO L208 MainTranslator]: Completed translation [2022-12-12 14:40:52,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:52 WrapperNode [2022-12-12 14:40:52,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 14:40:52,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 14:40:52,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 14:40:52,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 14:40:52,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:52" (1/1) ... [2022-12-12 14:40:52,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:52" (1/1) ... [2022-12-12 14:40:52,707 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-12 14:40:52,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 14:40:52,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 14:40:52,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 14:40:52,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 14:40:52,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:52" (1/1) ... [2022-12-12 14:40:52,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:52" (1/1) ... [2022-12-12 14:40:52,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:52" (1/1) ... [2022-12-12 14:40:52,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:52" (1/1) ... [2022-12-12 14:40:52,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:52" (1/1) ... [2022-12-12 14:40:52,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:52" (1/1) ... [2022-12-12 14:40:52,737 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:52" (1/1) ... [2022-12-12 14:40:52,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:52" (1/1) ... [2022-12-12 14:40:52,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 14:40:52,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 14:40:52,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 14:40:52,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 14:40:52,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:52" (1/1) ... [2022-12-12 14:40:52,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:40:52,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:40:52,776 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 14:40:52,786 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 14:40:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 14:40:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 14:40:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 14:40:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 14:40:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 14:40:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 14:40:52,823 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 14:40:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 14:40:52,824 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 14:40:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 14:40:52,824 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 14:40:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 14:40:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 14:40:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 14:40:52,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 14:40:52,825 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 14:40:52,955 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 14:40:52,957 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 14:40:53,154 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 14:40:53,159 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 14:40:53,159 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 14:40:53,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:40:53 BoogieIcfgContainer [2022-12-12 14:40:53,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 14:40:53,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 14:40:53,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 14:40:53,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 14:40:53,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 02:40:52" (1/3) ... [2022-12-12 14:40:53,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aaa3e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:40:53, skipping insertion in model container [2022-12-12 14:40:53,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:52" (2/3) ... [2022-12-12 14:40:53,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aaa3e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:40:53, skipping insertion in model container [2022-12-12 14:40:53,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:40:53" (3/3) ... [2022-12-12 14:40:53,172 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 14:40:53,188 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 14:40:53,188 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 14:40:53,189 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 14:40:53,247 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 14:40:53,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2022-12-12 14:40:53,340 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-12-12 14:40:53,340 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:40:53,344 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 14:40:53,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2022-12-12 14:40:53,348 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2022-12-12 14:40:53,349 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 14:40:53,374 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2022-12-12 14:40:53,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2022-12-12 14:40:53,397 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2022-12-12 14:40:53,397 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:40:53,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-12 14:40:53,400 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2022-12-12 14:40:53,400 INFO L226 LiptonReduction]: Number of co-enabled transitions 1044 [2022-12-12 14:40:55,609 INFO L241 LiptonReduction]: Total number of compositions: 53 [2022-12-12 14:40:55,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 14:40:55,627 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;@309a3cbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 14:40:55,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 14:40:55,632 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-12-12 14:40:55,633 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:40:55,633 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:40:55,633 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:40:55,634 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 14:40:55,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:40:55,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1488658015, now seen corresponding path program 1 times [2022-12-12 14:40:55,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:40:55,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246306021] [2022-12-12 14:40:55,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:40:55,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:40:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:40:56,111 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 14:40:56,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:40:56,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246306021] [2022-12-12 14:40:56,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246306021] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:40:56,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:40:56,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 14:40:56,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366702103] [2022-12-12 14:40:56,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:40:56,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 14:40:56,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:40:56,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 14:40:56,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 14:40:56,146 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 14:40:56,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:40:56,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:40:56,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 14:40:56,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:40:56,395 INFO L130 PetriNetUnfolder]: 996/1734 cut-off events. [2022-12-12 14:40:56,395 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-12-12 14:40:56,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3379 conditions, 1734 events. 996/1734 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 10205 event pairs, 369 based on Foata normal form. 69/1432 useless extension candidates. Maximal degree in co-relation 3368. Up to 932 conditions per place. [2022-12-12 14:40:56,415 INFO L137 encePairwiseOnDemand]: 19/27 looper letters, 29 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2022-12-12 14:40:56,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 169 flow [2022-12-12 14:40:56,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 14:40:56,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 14:40:56,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2022-12-12 14:40:56,425 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7283950617283951 [2022-12-12 14:40:56,427 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 63 flow. Second operand 3 states and 59 transitions. [2022-12-12 14:40:56,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 169 flow [2022-12-12 14:40:56,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-12 14:40:56,433 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 104 flow [2022-12-12 14:40:56,435 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2022-12-12 14:40:56,440 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2022-12-12 14:40:56,440 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 104 flow [2022-12-12 14:40:56,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:40:56,441 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:40:56,441 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:40:56,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 14:40:56,441 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 14:40:56,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:40:56,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1096242255, now seen corresponding path program 1 times [2022-12-12 14:40:56,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:40:56,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465740685] [2022-12-12 14:40:56,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:40:56,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:40:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:40:56,611 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 14:40:56,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:40:56,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465740685] [2022-12-12 14:40:56,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465740685] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:40:56,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:40:56,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:40:56,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173231408] [2022-12-12 14:40:56,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:40:56,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:40:56,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:40:56,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:40:56,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:40:56,614 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 14:40:56,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:40:56,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:40:56,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 14:40:56,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:40:56,801 INFO L130 PetriNetUnfolder]: 929/1605 cut-off events. [2022-12-12 14:40:56,801 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2022-12-12 14:40:56,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3894 conditions, 1605 events. 929/1605 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 9028 event pairs, 268 based on Foata normal form. 17/1268 useless extension candidates. Maximal degree in co-relation 3882. Up to 695 conditions per place. [2022-12-12 14:40:56,812 INFO L137 encePairwiseOnDemand]: 20/27 looper letters, 37 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2022-12-12 14:40:56,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 51 transitions, 256 flow [2022-12-12 14:40:56,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 14:40:56,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 14:40:56,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2022-12-12 14:40:56,815 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2022-12-12 14:40:56,815 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 104 flow. Second operand 4 states and 68 transitions. [2022-12-12 14:40:56,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 51 transitions, 256 flow [2022-12-12 14:40:56,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 51 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 14:40:56,822 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 146 flow [2022-12-12 14:40:56,822 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2022-12-12 14:40:56,823 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2022-12-12 14:40:56,823 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 146 flow [2022-12-12 14:40:56,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:40:56,823 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:40:56,823 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:40:56,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 14:40:56,824 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 14:40:56,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:40:56,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1096241449, now seen corresponding path program 1 times [2022-12-12 14:40:56,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:40:56,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075146242] [2022-12-12 14:40:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:40:56,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:40:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:40:56,970 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 14:40:56,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:40:56,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075146242] [2022-12-12 14:40:56,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075146242] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:40:56,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:40:56,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:40:56,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101329786] [2022-12-12 14:40:56,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:40:56,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:40:56,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:40:56,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:40:56,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:40:56,975 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 14:40:56,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:40:56,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:40:56,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 14:40:56,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:40:57,155 INFO L130 PetriNetUnfolder]: 887/1549 cut-off events. [2022-12-12 14:40:57,155 INFO L131 PetriNetUnfolder]: For 1011/1011 co-relation queries the response was YES. [2022-12-12 14:40:57,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4029 conditions, 1549 events. 887/1549 cut-off events. For 1011/1011 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 9291 event pairs, 212 based on Foata normal form. 15/1206 useless extension candidates. Maximal degree in co-relation 4014. Up to 713 conditions per place. [2022-12-12 14:40:57,165 INFO L137 encePairwiseOnDemand]: 20/27 looper letters, 44 selfloop transitions, 11 changer transitions 0/62 dead transitions. [2022-12-12 14:40:57,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 62 transitions, 350 flow [2022-12-12 14:40:57,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 14:40:57,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 14:40:57,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2022-12-12 14:40:57,167 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2022-12-12 14:40:57,167 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 146 flow. Second operand 4 states and 75 transitions. [2022-12-12 14:40:57,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 62 transitions, 350 flow [2022-12-12 14:40:57,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 62 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 14:40:57,170 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 226 flow [2022-12-12 14:40:57,170 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2022-12-12 14:40:57,171 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2022-12-12 14:40:57,171 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 226 flow [2022-12-12 14:40:57,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:40:57,171 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:40:57,171 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:40:57,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 14:40:57,172 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 14:40:57,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:40:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash -376228805, now seen corresponding path program 1 times [2022-12-12 14:40:57,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:40:57,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368456186] [2022-12-12 14:40:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:40:57,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:40:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:40:57,247 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 14:40:57,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:40:57,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368456186] [2022-12-12 14:40:57,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368456186] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:40:57,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:40:57,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 14:40:57,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692456898] [2022-12-12 14:40:57,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:40:57,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 14:40:57,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:40:57,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 14:40:57,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 14:40:57,250 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 14:40:57,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 14:40:57,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:40:57,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 14:40:57,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:40:57,436 INFO L130 PetriNetUnfolder]: 841/1497 cut-off events. [2022-12-12 14:40:57,436 INFO L131 PetriNetUnfolder]: For 2366/2366 co-relation queries the response was YES. [2022-12-12 14:40:57,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4351 conditions, 1497 events. 841/1497 cut-off events. For 2366/2366 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8567 event pairs, 322 based on Foata normal form. 12/1177 useless extension candidates. Maximal degree in co-relation 4332. Up to 1176 conditions per place. [2022-12-12 14:40:57,447 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 41 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2022-12-12 14:40:57,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 401 flow [2022-12-12 14:40:57,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 14:40:57,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 14:40:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2022-12-12 14:40:57,449 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2022-12-12 14:40:57,449 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 226 flow. Second operand 3 states and 51 transitions. [2022-12-12 14:40:57,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 401 flow [2022-12-12 14:40:57,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 53 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 14:40:57,455 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 239 flow [2022-12-12 14:40:57,455 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=239, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2022-12-12 14:40:57,456 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2022-12-12 14:40:57,456 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 239 flow [2022-12-12 14:40:57,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 14:40:57,456 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:40:57,456 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:40:57,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 14:40:57,457 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 14:40:57,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:40:57,457 INFO L85 PathProgramCache]: Analyzing trace with hash 361792629, now seen corresponding path program 1 times [2022-12-12 14:40:57,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:40:57,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440333074] [2022-12-12 14:40:57,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:40:57,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:40:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:40:57,535 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 14:40:57,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:40:57,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440333074] [2022-12-12 14:40:57,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440333074] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:40:57,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:40:57,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:40:57,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639721727] [2022-12-12 14:40:57,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:40:57,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 14:40:57,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:40:57,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 14:40:57,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 14:40:57,538 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 14:40:57,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 14:40:57,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:40:57,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 14:40:57,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:40:57,675 INFO L130 PetriNetUnfolder]: 800/1428 cut-off events. [2022-12-12 14:40:57,675 INFO L131 PetriNetUnfolder]: For 2123/2123 co-relation queries the response was YES. [2022-12-12 14:40:57,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4286 conditions, 1428 events. 800/1428 cut-off events. For 2123/2123 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8171 event pairs, 530 based on Foata normal form. 12/1121 useless extension candidates. Maximal degree in co-relation 4265. Up to 1031 conditions per place. [2022-12-12 14:40:57,685 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 37 selfloop transitions, 9 changer transitions 0/53 dead transitions. [2022-12-12 14:40:57,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 53 transitions, 412 flow [2022-12-12 14:40:57,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 14:40:57,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 14:40:57,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2022-12-12 14:40:57,687 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2022-12-12 14:40:57,687 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 239 flow. Second operand 3 states and 51 transitions. [2022-12-12 14:40:57,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 53 transitions, 412 flow [2022-12-12 14:40:57,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 14:40:57,693 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 258 flow [2022-12-12 14:40:57,693 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2022-12-12 14:40:57,694 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2022-12-12 14:40:57,694 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 258 flow [2022-12-12 14:40:57,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 14:40:57,694 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:40:57,694 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:40:57,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 14:40:57,694 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 14:40:57,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:40:57,695 INFO L85 PathProgramCache]: Analyzing trace with hash -562301015, now seen corresponding path program 1 times [2022-12-12 14:40:57,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:40:57,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968948944] [2022-12-12 14:40:57,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:40:57,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:40:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:40:57,773 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 14:40:57,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:40:57,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968948944] [2022-12-12 14:40:57,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968948944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:40:57,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:40:57,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:40:57,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8212400] [2022-12-12 14:40:57,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:40:57,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:40:57,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:40:57,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:40:57,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:40:57,775 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2022-12-12 14:40:57,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:40:57,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:40:57,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2022-12-12 14:40:57,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:40:57,960 INFO L130 PetriNetUnfolder]: 981/1793 cut-off events. [2022-12-12 14:40:57,960 INFO L131 PetriNetUnfolder]: For 3570/3627 co-relation queries the response was YES. [2022-12-12 14:40:57,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5131 conditions, 1793 events. 981/1793 cut-off events. For 3570/3627 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 11339 event pairs, 274 based on Foata normal form. 66/1412 useless extension candidates. Maximal degree in co-relation 5110. Up to 546 conditions per place. [2022-12-12 14:40:57,969 INFO L137 encePairwiseOnDemand]: 23/27 looper letters, 28 selfloop transitions, 4 changer transitions 14/58 dead transitions. [2022-12-12 14:40:57,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 58 transitions, 450 flow [2022-12-12 14:40:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 14:40:57,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 14:40:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2022-12-12 14:40:57,971 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6203703703703703 [2022-12-12 14:40:57,971 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 258 flow. Second operand 4 states and 67 transitions. [2022-12-12 14:40:57,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 58 transitions, 450 flow [2022-12-12 14:40:57,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 14:40:57,977 INFO L231 Difference]: Finished difference. Result has 52 places, 34 transitions, 204 flow [2022-12-12 14:40:57,977 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=52, PETRI_TRANSITIONS=34} [2022-12-12 14:40:57,977 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2022-12-12 14:40:57,977 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 34 transitions, 204 flow [2022-12-12 14:40:57,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:40:57,978 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:40:57,978 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:40:57,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 14:40:57,978 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 14:40:57,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:40:57,979 INFO L85 PathProgramCache]: Analyzing trace with hash -179719563, now seen corresponding path program 1 times [2022-12-12 14:40:57,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:40:57,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312846529] [2022-12-12 14:40:57,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:40:57,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:40:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:40:58,055 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 14:40:58,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:40:58,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312846529] [2022-12-12 14:40:58,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312846529] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:40:58,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:40:58,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:40:58,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572957238] [2022-12-12 14:40:58,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:40:58,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:40:58,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:40:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:40:58,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:40:58,058 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 14:40:58,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 34 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:40:58,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:40:58,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 14:40:58,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:40:58,243 INFO L130 PetriNetUnfolder]: 1097/1816 cut-off events. [2022-12-12 14:40:58,243 INFO L131 PetriNetUnfolder]: For 5845/5883 co-relation queries the response was YES. [2022-12-12 14:40:58,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5086 conditions, 1816 events. 1097/1816 cut-off events. For 5845/5883 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 10620 event pairs, 411 based on Foata normal form. 86/982 useless extension candidates. Maximal degree in co-relation 5062. Up to 1309 conditions per place. [2022-12-12 14:40:58,253 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 35 selfloop transitions, 14 changer transitions 24/83 dead transitions. [2022-12-12 14:40:58,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 83 transitions, 610 flow [2022-12-12 14:40:58,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 14:40:58,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 14:40:58,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2022-12-12 14:40:58,255 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.674074074074074 [2022-12-12 14:40:58,255 INFO L175 Difference]: Start difference. First operand has 52 places, 34 transitions, 204 flow. Second operand 5 states and 91 transitions. [2022-12-12 14:40:58,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 83 transitions, 610 flow [2022-12-12 14:40:58,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 83 transitions, 553 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-12-12 14:40:58,260 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 284 flow [2022-12-12 14:40:58,260 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2022-12-12 14:40:58,261 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2022-12-12 14:40:58,261 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 284 flow [2022-12-12 14:40:58,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:40:58,261 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:40:58,261 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:40:58,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 14:40:58,261 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 14:40:58,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:40:58,262 INFO L85 PathProgramCache]: Analyzing trace with hash -2082579222, now seen corresponding path program 1 times [2022-12-12 14:40:58,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:40:58,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735887544] [2022-12-12 14:40:58,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:40:58,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:40:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:40:58,347 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 14:40:58,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:40:58,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735887544] [2022-12-12 14:40:58,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735887544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:40:58,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:40:58,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:40:58,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448605629] [2022-12-12 14:40:58,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:40:58,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 14:40:58,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:40:58,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 14:40:58,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 14:40:58,349 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 14:40:58,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:40:58,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:40:58,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 14:40:58,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:40:58,562 INFO L130 PetriNetUnfolder]: 886/1645 cut-off events. [2022-12-12 14:40:58,563 INFO L131 PetriNetUnfolder]: For 4143/4565 co-relation queries the response was YES. [2022-12-12 14:40:58,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6543 conditions, 1645 events. 886/1645 cut-off events. For 4143/4565 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 11161 event pairs, 84 based on Foata normal form. 122/954 useless extension candidates. Maximal degree in co-relation 6520. Up to 1037 conditions per place. [2022-12-12 14:40:58,572 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 43 selfloop transitions, 24 changer transitions 23/100 dead transitions. [2022-12-12 14:40:58,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 100 transitions, 815 flow [2022-12-12 14:40:58,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 14:40:58,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 14:40:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2022-12-12 14:40:58,573 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2022-12-12 14:40:58,573 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 284 flow. Second operand 7 states and 120 transitions. [2022-12-12 14:40:58,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 100 transitions, 815 flow [2022-12-12 14:40:58,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 815 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-12 14:40:58,580 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 449 flow [2022-12-12 14:40:58,580 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=449, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2022-12-12 14:40:58,580 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2022-12-12 14:40:58,580 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 449 flow [2022-12-12 14:40:58,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:40:58,581 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:40:58,581 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:40:58,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 14:40:58,581 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 14:40:58,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:40:58,581 INFO L85 PathProgramCache]: Analyzing trace with hash -532220210, now seen corresponding path program 1 times [2022-12-12 14:40:58,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:40:58,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607972353] [2022-12-12 14:40:58,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:40:58,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:40:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:40:58,672 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 14:40:58,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:40:58,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607972353] [2022-12-12 14:40:58,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607972353] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:40:58,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:40:58,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 14:40:58,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252121046] [2022-12-12 14:40:58,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:40:58,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 14:40:58,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:40:58,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 14:40:58,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-12 14:40:58,674 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 14:40:58,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 449 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:40:58,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:40:58,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 14:40:58,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:40:58,879 INFO L130 PetriNetUnfolder]: 446/958 cut-off events. [2022-12-12 14:40:58,879 INFO L131 PetriNetUnfolder]: For 4298/4742 co-relation queries the response was YES. [2022-12-12 14:40:58,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5109 conditions, 958 events. 446/958 cut-off events. For 4298/4742 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6410 event pairs, 3 based on Foata normal form. 127/687 useless extension candidates. Maximal degree in co-relation 5081. Up to 661 conditions per place. [2022-12-12 14:40:58,884 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 21 selfloop transitions, 30 changer transitions 33/92 dead transitions. [2022-12-12 14:40:58,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 92 transitions, 906 flow [2022-12-12 14:40:58,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 14:40:58,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 14:40:58,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2022-12-12 14:40:58,885 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5102880658436214 [2022-12-12 14:40:58,885 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 449 flow. Second operand 9 states and 124 transitions. [2022-12-12 14:40:58,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 92 transitions, 906 flow [2022-12-12 14:40:58,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 92 transitions, 842 flow, removed 18 selfloop flow, removed 5 redundant places. [2022-12-12 14:40:58,906 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 428 flow [2022-12-12 14:40:58,906 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=428, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2022-12-12 14:40:58,906 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2022-12-12 14:40:58,907 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 428 flow [2022-12-12 14:40:58,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:40:58,907 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:40:58,907 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:40:58,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 14:40:58,907 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 14:40:58,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:40:58,908 INFO L85 PathProgramCache]: Analyzing trace with hash -741355879, now seen corresponding path program 1 times [2022-12-12 14:40:58,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:40:58,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011964846] [2022-12-12 14:40:58,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:40:58,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:40:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:40:59,046 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 14:40:59,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:40:59,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011964846] [2022-12-12 14:40:59,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011964846] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:40:59,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:40:59,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 14:40:59,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404102030] [2022-12-12 14:40:59,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:40:59,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 14:40:59,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:40:59,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 14:40:59,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 14:40:59,049 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 14:40:59,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 428 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 14:40:59,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:40:59,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 14:40:59,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:40:59,188 INFO L130 PetriNetUnfolder]: 415/900 cut-off events. [2022-12-12 14:40:59,189 INFO L131 PetriNetUnfolder]: For 4635/4710 co-relation queries the response was YES. [2022-12-12 14:40:59,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5179 conditions, 900 events. 415/900 cut-off events. For 4635/4710 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 5916 event pairs, 22 based on Foata normal form. 60/759 useless extension candidates. Maximal degree in co-relation 5150. Up to 625 conditions per place. [2022-12-12 14:40:59,198 INFO L137 encePairwiseOnDemand]: 21/27 looper letters, 42 selfloop transitions, 5 changer transitions 63/121 dead transitions. [2022-12-12 14:40:59,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 121 transitions, 1242 flow [2022-12-12 14:40:59,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 14:40:59,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 14:40:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2022-12-12 14:40:59,199 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5864197530864198 [2022-12-12 14:40:59,200 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 428 flow. Second operand 6 states and 95 transitions. [2022-12-12 14:40:59,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 121 transitions, 1242 flow [2022-12-12 14:40:59,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 121 transitions, 934 flow, removed 79 selfloop flow, removed 6 redundant places. [2022-12-12 14:40:59,258 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 254 flow [2022-12-12 14:40:59,259 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2022-12-12 14:40:59,260 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2022-12-12 14:40:59,260 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 254 flow [2022-12-12 14:40:59,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 14:40:59,260 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:40:59,260 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:40:59,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 14:40:59,261 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 14:40:59,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:40:59,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1164687110, now seen corresponding path program 1 times [2022-12-12 14:40:59,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:40:59,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495733381] [2022-12-12 14:40:59,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:40:59,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:40:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:40:59,371 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 14:40:59,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:40:59,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495733381] [2022-12-12 14:40:59,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495733381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:40:59,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:40:59,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:40:59,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42782432] [2022-12-12 14:40:59,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:40:59,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 14:40:59,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:40:59,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 14:40:59,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 14:40:59,373 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 14:40:59,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 14:40:59,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:40:59,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 14:40:59,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:40:59,416 INFO L130 PetriNetUnfolder]: 123/257 cut-off events. [2022-12-12 14:40:59,416 INFO L131 PetriNetUnfolder]: For 976/992 co-relation queries the response was YES. [2022-12-12 14:40:59,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 257 events. 123/257 cut-off events. For 976/992 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1127 event pairs, 6 based on Foata normal form. 39/226 useless extension candidates. Maximal degree in co-relation 1002. Up to 172 conditions per place. [2022-12-12 14:40:59,417 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 0 selfloop transitions, 0 changer transitions 51/51 dead transitions. [2022-12-12 14:40:59,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 372 flow [2022-12-12 14:40:59,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 14:40:59,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 14:40:59,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2022-12-12 14:40:59,418 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2022-12-12 14:40:59,418 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 254 flow. Second operand 4 states and 53 transitions. [2022-12-12 14:40:59,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 372 flow [2022-12-12 14:40:59,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 326 flow, removed 3 selfloop flow, removed 14 redundant places. [2022-12-12 14:40:59,424 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2022-12-12 14:40:59,424 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2022-12-12 14:40:59,425 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2022-12-12 14:40:59,425 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2022-12-12 14:40:59,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 14:40:59,427 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 14:40:59,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 14:40:59,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 14:40:59,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 14:40:59,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 14:40:59,428 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:40:59,431 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 14:40:59,431 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 14:40:59,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 02:40:59 BasicIcfg [2022-12-12 14:40:59,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 14:40:59,434 INFO L158 Benchmark]: Toolchain (without parser) took 7309.52ms. Allocated memory was 179.3MB in the beginning and 272.6MB in the end (delta: 93.3MB). Free memory was 154.6MB in the beginning and 90.3MB in the end (delta: 64.3MB). Peak memory consumption was 159.2MB. Max. memory is 8.0GB. [2022-12-12 14:40:59,434 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 179.3MB. Free memory is still 155.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 14:40:59,435 INFO L158 Benchmark]: CACSL2BoogieTranslator took 521.15ms. Allocated memory is still 179.3MB. Free memory was 154.6MB in the beginning and 131.0MB in the end (delta: 23.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-12-12 14:40:59,436 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.48ms. Allocated memory is still 179.3MB. Free memory was 131.0MB in the beginning and 129.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 14:40:59,436 INFO L158 Benchmark]: Boogie Preprocessor took 31.98ms. Allocated memory is still 179.3MB. Free memory was 129.4MB in the beginning and 127.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 14:40:59,436 INFO L158 Benchmark]: RCFGBuilder took 421.26ms. Allocated memory is still 179.3MB. Free memory was 127.8MB in the beginning and 114.0MB in the end (delta: 13.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 14:40:59,437 INFO L158 Benchmark]: TraceAbstraction took 6270.31ms. Allocated memory was 179.3MB in the beginning and 272.6MB in the end (delta: 93.3MB). Free memory was 112.6MB in the beginning and 90.3MB in the end (delta: 22.3MB). Peak memory consumption was 117.2MB. Max. memory is 8.0GB. [2022-12-12 14:40:59,438 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 179.3MB. Free memory is still 155.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 521.15ms. Allocated memory is still 179.3MB. Free memory was 154.6MB in the beginning and 131.0MB in the end (delta: 23.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.48ms. Allocated memory is still 179.3MB. Free memory was 131.0MB in the beginning and 129.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.98ms. Allocated memory is still 179.3MB. Free memory was 129.4MB in the beginning and 127.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 421.26ms. Allocated memory is still 179.3MB. Free memory was 127.8MB in the beginning and 114.0MB in the end (delta: 13.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 6270.31ms. Allocated memory was 179.3MB in the beginning and 272.6MB in the end (delta: 93.3MB). Free memory was 112.6MB in the beginning and 90.3MB in the end (delta: 22.3MB). Peak memory consumption was 117.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 79 PlacesBefore, 36 PlacesAfterwards, 70 TransitionsBefore, 27 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 32 ConcurrentYvCompositions, 0 ChoiceCompositions, 53 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 972, independent: 919, independent conditional: 919, independent unconditional: 0, dependent: 53, dependent conditional: 53, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 972, independent: 919, independent conditional: 0, independent unconditional: 919, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 972, independent: 919, independent conditional: 0, independent unconditional: 919, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 972, independent: 919, independent conditional: 0, independent unconditional: 919, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 740, independent: 702, independent conditional: 0, independent unconditional: 702, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 740, independent: 684, independent conditional: 0, independent unconditional: 684, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 56, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 136, independent: 49, independent conditional: 0, independent unconditional: 49, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 972, independent: 217, independent conditional: 0, independent unconditional: 217, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 740, unknown conditional: 0, unknown unconditional: 740] , Statistics on independence cache: Total cache size (in pairs): 1086, Positive cache size: 1048, Positive conditional cache size: 0, Positive unconditional cache size: 1048, Negative cache size: 38, Negative conditional cache size: 0, Negative unconditional cache size: 38, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.2s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 265 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 265 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 677 IncrementalHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 16 mSDtfsCounter, 677 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=449occurred in iteration=8, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 636 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 14:40:59,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...