/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/safe002_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 20:25:43,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 20:25:43,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 20:25:43,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 20:25:43,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 20:25:43,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 20:25:43,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 20:25:43,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 20:25:43,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 20:25:43,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 20:25:43,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 20:25:43,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 20:25:43,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 20:25:43,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 20:25:43,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 20:25:43,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 20:25:43,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 20:25:43,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 20:25:43,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 20:25:43,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 20:25:43,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 20:25:43,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 20:25:43,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 20:25:43,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 20:25:43,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 20:25:43,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 20:25:43,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 20:25:43,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 20:25:43,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 20:25:43,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 20:25:43,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 20:25:43,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 20:25:43,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 20:25:43,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 20:25:43,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 20:25:43,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 20:25:43,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 20:25:43,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 20:25:43,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 20:25:43,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 20:25:43,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 20:25:43,680 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 [2022-12-05 20:25:43,714 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 20:25:43,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 20:25:43,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 20:25:43,715 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 20:25:43,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 20:25:43,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 20:25:43,716 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 20:25:43,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 20:25:43,717 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 20:25:43,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 20:25:43,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 20:25:43,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 20:25:43,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 20:25:43,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 20:25:43,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 20:25:43,718 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 20:25:43,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 20:25:43,718 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 20:25:43,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 20:25:43,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 20:25:43,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 20:25:43,719 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 20:25:43,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 20:25:43,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:25:43,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 20:25:43,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 20:25:43,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 20:25:43,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 20:25:43,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 20:25:43,720 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 20:25:43,720 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 20:25:43,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 20:25:43,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 20:25:44,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 20:25:44,001 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 20:25:44,001 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 20:25:44,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2022-12-05 20:25:44,994 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 20:25:45,204 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 20:25:45,205 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2022-12-05 20:25:45,234 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bd25c0a7/129ab1673869477fb2bf77c7507c5813/FLAGfd9d1121f [2022-12-05 20:25:45,245 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bd25c0a7/129ab1673869477fb2bf77c7507c5813 [2022-12-05 20:25:45,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 20:25:45,250 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 20:25:45,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 20:25:45,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 20:25:45,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 20:25:45,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:25:45" (1/1) ... [2022-12-05 20:25:45,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a4704e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:45, skipping insertion in model container [2022-12-05 20:25:45,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:25:45" (1/1) ... [2022-12-05 20:25:45,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 20:25:45,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 20:25:45,400 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i[945,958] [2022-12-05 20:25:45,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,490 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,490 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,490 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,498 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,498 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:25:45,510 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 20:25:45,522 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i[945,958] [2022-12-05 20:25:45,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,551 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,551 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,551 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,551 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,552 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,552 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,552 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,554 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,554 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,554 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,555 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,555 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,555 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:25:45,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:25:45,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:25:45,598 INFO L208 MainTranslator]: Completed translation [2022-12-05 20:25:45,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:45 WrapperNode [2022-12-05 20:25:45,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 20:25:45,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 20:25:45,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 20:25:45,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 20:25:45,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:45" (1/1) ... [2022-12-05 20:25:45,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:45" (1/1) ... [2022-12-05 20:25:45,641 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-05 20:25:45,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 20:25:45,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 20:25:45,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 20:25:45,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 20:25:45,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:45" (1/1) ... [2022-12-05 20:25:45,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:45" (1/1) ... [2022-12-05 20:25:45,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:45" (1/1) ... [2022-12-05 20:25:45,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:45" (1/1) ... [2022-12-05 20:25:45,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:45" (1/1) ... [2022-12-05 20:25:45,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:45" (1/1) ... [2022-12-05 20:25:45,668 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:45" (1/1) ... [2022-12-05 20:25:45,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:45" (1/1) ... [2022-12-05 20:25:45,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 20:25:45,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 20:25:45,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 20:25:45,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 20:25:45,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:45" (1/1) ... [2022-12-05 20:25:45,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:25:45,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:25:45,713 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) [2022-12-05 20:25:45,771 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 [2022-12-05 20:25:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 20:25:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 20:25:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 20:25:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 20:25:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 20:25:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-05 20:25:45,794 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-05 20:25:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-05 20:25:45,794 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-05 20:25:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-05 20:25:45,794 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-05 20:25:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 20:25:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 20:25:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 20:25:45,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 20:25:45,795 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 20:25:45,878 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 20:25:45,879 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 20:25:45,996 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 20:25:46,000 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 20:25:46,001 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 20:25:46,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:25:46 BoogieIcfgContainer [2022-12-05 20:25:46,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 20:25:46,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 20:25:46,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 20:25:46,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 20:25:46,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:25:45" (1/3) ... [2022-12-05 20:25:46,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae37636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:25:46, skipping insertion in model container [2022-12-05 20:25:46,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:45" (2/3) ... [2022-12-05 20:25:46,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae37636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:25:46, skipping insertion in model container [2022-12-05 20:25:46,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:25:46" (3/3) ... [2022-12-05 20:25:46,018 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_tso.i [2022-12-05 20:25:46,030 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 20:25:46,030 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 20:25:46,030 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 20:25:46,100 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-05 20:25:46,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2022-12-05 20:25:46,188 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-12-05 20:25:46,188 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:25:46,192 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. [2022-12-05 20:25:46,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2022-12-05 20:25:46,195 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2022-12-05 20:25:46,199 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 20:25:46,222 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2022-12-05 20:25:46,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2022-12-05 20:25:46,251 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2022-12-05 20:25:46,251 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:25:46,252 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. [2022-12-05 20:25:46,256 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2022-12-05 20:25:46,257 INFO L188 LiptonReduction]: Number of co-enabled transitions 1044 [2022-12-05 20:25:47,950 INFO L203 LiptonReduction]: Total number of compositions: 53 [2022-12-05 20:25:47,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 20:25:47,981 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;@5f538c9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 20:25:47,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 20:25:47,986 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2022-12-05 20:25:47,986 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:25:47,986 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:25:47,987 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:25:47,987 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)] === [2022-12-05 20:25:47,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:25:48,003 INFO L85 PathProgramCache]: Analyzing trace with hash 229073430, now seen corresponding path program 1 times [2022-12-05 20:25:48,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:25:48,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578262216] [2022-12-05 20:25:48,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:25:48,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:25:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:25:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:25:48,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:25:48,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578262216] [2022-12-05 20:25:48,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578262216] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:25:48,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:25:48,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 20:25:48,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822155184] [2022-12-05 20:25:48,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:25:48,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-05 20:25:48,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:25:48,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-05 20:25:48,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-05 20:25:48,152 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2022-12-05 20:25:48,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-12-05 20:25:48,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:25:48,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2022-12-05 20:25:48,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:25:48,205 INFO L130 PetriNetUnfolder]: 164/296 cut-off events. [2022-12-05 20:25:48,205 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-05 20:25:48,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 296 events. 164/296 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1225 event pairs, 164 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 586. Up to 271 conditions per place. [2022-12-05 20:25:48,208 INFO L137 encePairwiseOnDemand]: 17/18 looper letters, 14 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2022-12-05 20:25:48,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 71 flow [2022-12-05 20:25:48,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-05 20:25:48,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-05 20:25:48,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 21 transitions. [2022-12-05 20:25:48,216 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2022-12-05 20:25:48,217 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states and 21 transitions. [2022-12-05 20:25:48,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 71 flow [2022-12-05 20:25:48,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 68 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 20:25:48,220 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2022-12-05 20:25:48,221 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2022-12-05 20:25:48,223 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2022-12-05 20:25:48,223 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2022-12-05 20:25:48,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-12-05 20:25:48,223 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:25:48,223 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:25:48,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 20:25:48,224 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)] === [2022-12-05 20:25:48,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:25:48,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1488657983, now seen corresponding path program 1 times [2022-12-05 20:25:48,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:25:48,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603364593] [2022-12-05 20:25:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:25:48,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:25:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:25:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:25:48,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:25:48,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603364593] [2022-12-05 20:25:48,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603364593] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:25:48,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:25:48,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 20:25:48,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138798137] [2022-12-05 20:25:48,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:25:48,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:25:48,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:25:48,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:25:48,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:25:48,400 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 18 [2022-12-05 20:25:48,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-12-05 20:25:48,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:25:48,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 18 [2022-12-05 20:25:48,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:25:48,494 INFO L130 PetriNetUnfolder]: 557/896 cut-off events. [2022-12-05 20:25:48,495 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:25:48,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 896 events. 557/896 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3933 event pairs, 184 based on Foata normal form. 42/938 useless extension candidates. Maximal degree in co-relation 1846. Up to 579 conditions per place. [2022-12-05 20:25:48,502 INFO L137 encePairwiseOnDemand]: 11/18 looper letters, 25 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2022-12-05 20:25:48,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 31 transitions, 134 flow [2022-12-05 20:25:48,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:25:48,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:25:48,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2022-12-05 20:25:48,504 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2022-12-05 20:25:48,504 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 32 transitions. [2022-12-05 20:25:48,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 31 transitions, 134 flow [2022-12-05 20:25:48,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 20:25:48,507 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 86 flow [2022-12-05 20:25:48,507 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2022-12-05 20:25:48,508 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2022-12-05 20:25:48,508 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 86 flow [2022-12-05 20:25:48,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-12-05 20:25:48,508 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:25:48,508 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:25:48,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 20:25:48,509 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)] === [2022-12-05 20:25:48,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:25:48,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1096243217, now seen corresponding path program 1 times [2022-12-05 20:25:48,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:25:48,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453527690] [2022-12-05 20:25:48,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:25:48,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:25:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:25:48,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:25:48,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:25:48,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453527690] [2022-12-05 20:25:48,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453527690] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:25:48,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:25:48,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:25:48,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325974230] [2022-12-05 20:25:48,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:25:48,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:25:48,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:25:48,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:25:48,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:25:48,691 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 18 [2022-12-05 20:25:48,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 86 flow. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-12-05 20:25:48,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:25:48,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 18 [2022-12-05 20:25:48,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:25:48,785 INFO L130 PetriNetUnfolder]: 511/826 cut-off events. [2022-12-05 20:25:48,786 INFO L131 PetriNetUnfolder]: For 317/317 co-relation queries the response was YES. [2022-12-05 20:25:48,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2253 conditions, 826 events. 511/826 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3323 event pairs, 122 based on Foata normal form. 12/838 useless extension candidates. Maximal degree in co-relation 2248. Up to 415 conditions per place. [2022-12-05 20:25:48,789 INFO L137 encePairwiseOnDemand]: 11/18 looper letters, 29 selfloop transitions, 7 changer transitions 0/36 dead transitions. [2022-12-05 20:25:48,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 202 flow [2022-12-05 20:25:48,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:25:48,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:25:48,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 34 transitions. [2022-12-05 20:25:48,791 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2022-12-05 20:25:48,791 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 86 flow. Second operand 4 states and 34 transitions. [2022-12-05 20:25:48,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 202 flow [2022-12-05 20:25:48,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 36 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:25:48,793 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 122 flow [2022-12-05 20:25:48,793 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2022-12-05 20:25:48,794 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2022-12-05 20:25:48,794 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 122 flow [2022-12-05 20:25:48,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-12-05 20:25:48,794 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:25:48,794 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:25:48,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 20:25:48,795 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)] === [2022-12-05 20:25:48,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:25:48,795 INFO L85 PathProgramCache]: Analyzing trace with hash -376223193, now seen corresponding path program 1 times [2022-12-05 20:25:48,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:25:48,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349560379] [2022-12-05 20:25:48,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:25:48,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:25:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:25:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:25:48,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:25:48,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349560379] [2022-12-05 20:25:48,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349560379] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:25:48,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:25:48,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:25:48,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404428416] [2022-12-05 20:25:48,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:25:48,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:25:48,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:25:48,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:25:48,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:25:48,868 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 18 [2022-12-05 20:25:48,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-12-05 20:25:48,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:25:48,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 18 [2022-12-05 20:25:48,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:25:48,950 INFO L130 PetriNetUnfolder]: 514/893 cut-off events. [2022-12-05 20:25:48,951 INFO L131 PetriNetUnfolder]: For 799/799 co-relation queries the response was YES. [2022-12-05 20:25:48,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2530 conditions, 893 events. 514/893 cut-off events. For 799/799 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4351 event pairs, 133 based on Foata normal form. 38/908 useless extension candidates. Maximal degree in co-relation 2523. Up to 364 conditions per place. [2022-12-05 20:25:48,954 INFO L137 encePairwiseOnDemand]: 13/18 looper letters, 29 selfloop transitions, 6 changer transitions 11/48 dead transitions. [2022-12-05 20:25:48,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 318 flow [2022-12-05 20:25:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:25:48,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:25:48,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 41 transitions. [2022-12-05 20:25:48,956 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2022-12-05 20:25:48,956 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 122 flow. Second operand 4 states and 41 transitions. [2022-12-05 20:25:48,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 318 flow [2022-12-05 20:25:48,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:25:48,959 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 145 flow [2022-12-05 20:25:48,959 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2022-12-05 20:25:48,959 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2022-12-05 20:25:48,959 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 145 flow [2022-12-05 20:25:48,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-12-05 20:25:48,960 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:25:48,960 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:25:48,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 20:25:48,960 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)] === [2022-12-05 20:25:48,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:25:48,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1196897395, now seen corresponding path program 1 times [2022-12-05 20:25:48,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:25:48,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453677797] [2022-12-05 20:25:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:25:48,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:25:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:25:49,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:25:49,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:25:49,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453677797] [2022-12-05 20:25:49,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453677797] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:25:49,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:25:49,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:25:49,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052613458] [2022-12-05 20:25:49,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:25:49,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:25:49,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:25:49,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:25:49,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:25:49,033 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 18 [2022-12-05 20:25:49,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-12-05 20:25:49,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:25:49,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 18 [2022-12-05 20:25:49,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:25:49,093 INFO L130 PetriNetUnfolder]: 300/537 cut-off events. [2022-12-05 20:25:49,093 INFO L131 PetriNetUnfolder]: For 843/843 co-relation queries the response was YES. [2022-12-05 20:25:49,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1681 conditions, 537 events. 300/537 cut-off events. For 843/843 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2334 event pairs, 87 based on Foata normal form. 30/567 useless extension candidates. Maximal degree in co-relation 1671. Up to 276 conditions per place. [2022-12-05 20:25:49,095 INFO L137 encePairwiseOnDemand]: 13/18 looper letters, 22 selfloop transitions, 4 changer transitions 9/37 dead transitions. [2022-12-05 20:25:49,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 37 transitions, 274 flow [2022-12-05 20:25:49,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:25:49,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:25:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 34 transitions. [2022-12-05 20:25:49,097 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2022-12-05 20:25:49,097 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 145 flow. Second operand 4 states and 34 transitions. [2022-12-05 20:25:49,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 37 transitions, 274 flow [2022-12-05 20:25:49,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 246 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-05 20:25:49,102 INFO L231 Difference]: Finished difference. Result has 38 places, 22 transitions, 120 flow [2022-12-05 20:25:49,102 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=38, PETRI_TRANSITIONS=22} [2022-12-05 20:25:49,103 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2022-12-05 20:25:49,103 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 22 transitions, 120 flow [2022-12-05 20:25:49,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-12-05 20:25:49,103 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:25:49,103 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:25:49,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 20:25:49,103 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)] === [2022-12-05 20:25:49,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:25:49,104 INFO L85 PathProgramCache]: Analyzing trace with hash -467939147, now seen corresponding path program 1 times [2022-12-05 20:25:49,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:25:49,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268515299] [2022-12-05 20:25:49,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:25:49,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:25:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:25:49,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:25:49,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:25:49,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268515299] [2022-12-05 20:25:49,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268515299] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:25:49,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:25:49,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:25:49,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858219035] [2022-12-05 20:25:49,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:25:49,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:25:49,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:25:49,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:25:49,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:25:49,213 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 18 [2022-12-05 20:25:49,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 22 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-12-05 20:25:49,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:25:49,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 18 [2022-12-05 20:25:49,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:25:49,268 INFO L130 PetriNetUnfolder]: 161/300 cut-off events. [2022-12-05 20:25:49,268 INFO L131 PetriNetUnfolder]: For 376/376 co-relation queries the response was YES. [2022-12-05 20:25:49,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 300 events. 161/300 cut-off events. For 376/376 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1099 event pairs, 47 based on Foata normal form. 18/318 useless extension candidates. Maximal degree in co-relation 906. Up to 99 conditions per place. [2022-12-05 20:25:49,269 INFO L137 encePairwiseOnDemand]: 14/18 looper letters, 18 selfloop transitions, 2 changer transitions 15/36 dead transitions. [2022-12-05 20:25:49,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 227 flow [2022-12-05 20:25:49,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:25:49,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:25:49,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2022-12-05 20:25:49,270 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2022-12-05 20:25:49,270 INFO L175 Difference]: Start difference. First operand has 38 places, 22 transitions, 120 flow. Second operand 5 states and 39 transitions. [2022-12-05 20:25:49,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 227 flow [2022-12-05 20:25:49,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 202 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-12-05 20:25:49,272 INFO L231 Difference]: Finished difference. Result has 38 places, 17 transitions, 74 flow [2022-12-05 20:25:49,272 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=74, PETRI_PLACES=38, PETRI_TRANSITIONS=17} [2022-12-05 20:25:49,273 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2022-12-05 20:25:49,273 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 17 transitions, 74 flow [2022-12-05 20:25:49,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-12-05 20:25:49,273 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:25:49,273 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:25:49,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 20:25:49,273 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)] === [2022-12-05 20:25:49,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:25:49,274 INFO L85 PathProgramCache]: Analyzing trace with hash 651961977, now seen corresponding path program 1 times [2022-12-05 20:25:49,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:25:49,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580393785] [2022-12-05 20:25:49,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:25:49,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:25:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:25:49,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:25:49,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:25:49,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580393785] [2022-12-05 20:25:49,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580393785] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:25:49,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:25:49,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:25:49,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362788739] [2022-12-05 20:25:49,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:25:49,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:25:49,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:25:49,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:25:49,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:25:49,345 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2022-12-05 20:25:49,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 17 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2022-12-05 20:25:49,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:25:49,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2022-12-05 20:25:49,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:25:49,386 INFO L130 PetriNetUnfolder]: 54/118 cut-off events. [2022-12-05 20:25:49,387 INFO L131 PetriNetUnfolder]: For 317/321 co-relation queries the response was YES. [2022-12-05 20:25:49,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 118 events. 54/118 cut-off events. For 317/321 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 374 event pairs, 18 based on Foata normal form. 11/124 useless extension candidates. Maximal degree in co-relation 339. Up to 71 conditions per place. [2022-12-05 20:25:49,387 INFO L137 encePairwiseOnDemand]: 12/18 looper letters, 17 selfloop transitions, 4 changer transitions 12/36 dead transitions. [2022-12-05 20:25:49,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 207 flow [2022-12-05 20:25:49,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:25:49,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:25:49,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2022-12-05 20:25:49,388 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2022-12-05 20:25:49,388 INFO L175 Difference]: Start difference. First operand has 38 places, 17 transitions, 74 flow. Second operand 5 states and 50 transitions. [2022-12-05 20:25:49,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 207 flow [2022-12-05 20:25:49,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 172 flow, removed 7 selfloop flow, removed 8 redundant places. [2022-12-05 20:25:49,389 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 90 flow [2022-12-05 20:25:49,390 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2022-12-05 20:25:49,390 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2022-12-05 20:25:49,390 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 90 flow [2022-12-05 20:25:49,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2022-12-05 20:25:49,390 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:25:49,390 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:25:49,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 20:25:49,391 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)] === [2022-12-05 20:25:49,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:25:49,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2082528257, now seen corresponding path program 1 times [2022-12-05 20:25:49,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:25:49,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519030877] [2022-12-05 20:25:49,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:25:49,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:25:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:25:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:25:49,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:25:49,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519030877] [2022-12-05 20:25:49,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519030877] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:25:49,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:25:49,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:25:49,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404684604] [2022-12-05 20:25:49,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:25:49,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:25:49,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:25:49,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:25:49,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:25:49,454 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2022-12-05 20:25:49,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-12-05 20:25:49,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:25:49,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2022-12-05 20:25:49,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:25:49,496 INFO L130 PetriNetUnfolder]: 32/83 cut-off events. [2022-12-05 20:25:49,496 INFO L131 PetriNetUnfolder]: For 164/184 co-relation queries the response was YES. [2022-12-05 20:25:49,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 83 events. 32/83 cut-off events. For 164/184 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 212 event pairs, 5 based on Foata normal form. 14/95 useless extension candidates. Maximal degree in co-relation 297. Up to 48 conditions per place. [2022-12-05 20:25:49,496 INFO L137 encePairwiseOnDemand]: 12/18 looper letters, 18 selfloop transitions, 7 changer transitions 10/38 dead transitions. [2022-12-05 20:25:49,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 250 flow [2022-12-05 20:25:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 20:25:49,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 20:25:49,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 55 transitions. [2022-12-05 20:25:49,497 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2022-12-05 20:25:49,497 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 90 flow. Second operand 6 states and 55 transitions. [2022-12-05 20:25:49,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 250 flow [2022-12-05 20:25:49,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-05 20:25:49,499 INFO L231 Difference]: Finished difference. Result has 39 places, 23 transitions, 140 flow [2022-12-05 20:25:49,499 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=39, PETRI_TRANSITIONS=23} [2022-12-05 20:25:49,499 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2022-12-05 20:25:49,499 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 23 transitions, 140 flow [2022-12-05 20:25:49,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-12-05 20:25:49,499 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:25:49,500 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:25:49,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 20:25:49,500 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)] === [2022-12-05 20:25:49,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:25:49,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1181676660, now seen corresponding path program 1 times [2022-12-05 20:25:49,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:25:49,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6285084] [2022-12-05 20:25:49,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:25:49,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:25:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:25:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:25:49,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:25:49,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6285084] [2022-12-05 20:25:49,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6285084] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:25:49,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:25:49,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 20:25:49,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34548758] [2022-12-05 20:25:49,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:25:49,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 20:25:49,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:25:49,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 20:25:49,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-05 20:25:49,568 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2022-12-05 20:25:49,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 23 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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) [2022-12-05 20:25:49,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:25:49,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2022-12-05 20:25:49,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:25:49,615 INFO L130 PetriNetUnfolder]: 17/54 cut-off events. [2022-12-05 20:25:49,615 INFO L131 PetriNetUnfolder]: For 176/191 co-relation queries the response was YES. [2022-12-05 20:25:49,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 54 events. 17/54 cut-off events. For 176/191 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 102 event pairs, 2 based on Foata normal form. 10/63 useless extension candidates. Maximal degree in co-relation 218. Up to 28 conditions per place. [2022-12-05 20:25:49,615 INFO L137 encePairwiseOnDemand]: 12/18 looper letters, 15 selfloop transitions, 10 changer transitions 5/33 dead transitions. [2022-12-05 20:25:49,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 33 transitions, 260 flow [2022-12-05 20:25:49,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 20:25:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 20:25:49,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 53 transitions. [2022-12-05 20:25:49,616 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2022-12-05 20:25:49,616 INFO L175 Difference]: Start difference. First operand has 39 places, 23 transitions, 140 flow. Second operand 7 states and 53 transitions. [2022-12-05 20:25:49,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 33 transitions, 260 flow [2022-12-05 20:25:49,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 222 flow, removed 15 selfloop flow, removed 4 redundant places. [2022-12-05 20:25:49,618 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 140 flow [2022-12-05 20:25:49,618 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=140, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2022-12-05 20:25:49,618 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2022-12-05 20:25:49,618 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 140 flow [2022-12-05 20:25:49,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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) [2022-12-05 20:25:49,619 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:25:49,619 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:25:49,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 20:25:49,619 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)] === [2022-12-05 20:25:49,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:25:49,619 INFO L85 PathProgramCache]: Analyzing trace with hash -726230389, now seen corresponding path program 1 times [2022-12-05 20:25:49,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:25:49,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297606221] [2022-12-05 20:25:49,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:25:49,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:25:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:25:49,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:25:49,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:25:49,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297606221] [2022-12-05 20:25:49,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297606221] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:25:49,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:25:49,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:25:49,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562048136] [2022-12-05 20:25:49,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:25:49,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:25:49,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:25:49,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:25:49,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:25:49,736 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 18 [2022-12-05 20:25:49,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 140 flow. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-12-05 20:25:49,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:25:49,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 18 [2022-12-05 20:25:49,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:25:49,790 INFO L130 PetriNetUnfolder]: 21/55 cut-off events. [2022-12-05 20:25:49,790 INFO L131 PetriNetUnfolder]: For 107/107 co-relation queries the response was YES. [2022-12-05 20:25:49,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 55 events. 21/55 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 4 based on Foata normal form. 1/56 useless extension candidates. Maximal degree in co-relation 210. Up to 35 conditions per place. [2022-12-05 20:25:49,791 INFO L137 encePairwiseOnDemand]: 13/18 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2022-12-05 20:25:49,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 28 transitions, 220 flow [2022-12-05 20:25:49,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:25:49,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:25:49,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2022-12-05 20:25:49,792 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.23333333333333334 [2022-12-05 20:25:49,792 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 140 flow. Second operand 5 states and 21 transitions. [2022-12-05 20:25:49,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 28 transitions, 220 flow [2022-12-05 20:25:49,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 180 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-12-05 20:25:49,793 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2022-12-05 20:25:49,793 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2022-12-05 20:25:49,793 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2022-12-05 20:25:49,793 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2022-12-05 20:25:49,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-12-05 20:25:49,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-05 20:25:49,796 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-05 20:25:49,796 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-05 20:25:49,796 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-05 20:25:49,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 20:25:49,796 INFO L458 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:25:49,798 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 20:25:49,798 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 20:25:49,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 08:25:49 BasicIcfg [2022-12-05 20:25:49,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 20:25:49,811 INFO L158 Benchmark]: Toolchain (without parser) took 4561.20ms. Allocated memory was 190.8MB in the beginning and 363.9MB in the end (delta: 173.0MB). Free memory was 165.9MB in the beginning and 302.8MB in the end (delta: -136.9MB). Peak memory consumption was 36.6MB. Max. memory is 8.0GB. [2022-12-05 20:25:49,811 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 190.8MB. Free memory is still 167.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:25:49,811 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.89ms. Allocated memory is still 190.8MB. Free memory was 165.9MB in the beginning and 142.3MB in the end (delta: 23.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-12-05 20:25:49,811 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.68ms. Allocated memory is still 190.8MB. Free memory was 142.3MB in the beginning and 140.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:25:49,812 INFO L158 Benchmark]: Boogie Preprocessor took 28.49ms. Allocated memory is still 190.8MB. Free memory was 140.2MB in the beginning and 139.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 20:25:49,812 INFO L158 Benchmark]: RCFGBuilder took 331.34ms. Allocated memory is still 190.8MB. Free memory was 139.1MB in the beginning and 125.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-05 20:25:49,812 INFO L158 Benchmark]: TraceAbstraction took 3806.95ms. Allocated memory was 190.8MB in the beginning and 363.9MB in the end (delta: 173.0MB). Free memory was 125.0MB in the beginning and 302.8MB in the end (delta: -177.8MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:25:49,813 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 190.8MB. Free memory is still 167.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 347.89ms. Allocated memory is still 190.8MB. Free memory was 165.9MB in the beginning and 142.3MB in the end (delta: 23.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.68ms. Allocated memory is still 190.8MB. Free memory was 142.3MB in the beginning and 140.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.49ms. Allocated memory is still 190.8MB. Free memory was 140.2MB in the beginning and 139.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 331.34ms. Allocated memory is still 190.8MB. Free memory was 139.1MB in the beginning and 125.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3806.95ms. Allocated memory was 190.8MB in the beginning and 363.9MB in the end (delta: 173.0MB). Free memory was 125.0MB in the beginning and 302.8MB in the end (delta: -177.8MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 32 ConcurrentYvCompositions, 0 ChoiceCompositions, 53 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 745, independent: 706, independent conditional: 706, independent unconditional: 0, dependent: 39, dependent conditional: 39, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 745, independent: 706, independent conditional: 0, independent unconditional: 706, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 745, independent: 706, independent conditional: 0, independent unconditional: 706, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 745, independent: 706, independent conditional: 0, independent unconditional: 706, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 654, independent: 621, independent conditional: 0, independent unconditional: 621, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 654, independent: 607, independent conditional: 0, independent unconditional: 607, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 47, independent: 14, independent conditional: 0, independent unconditional: 14, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 99, independent: 43, independent conditional: 0, independent unconditional: 43, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 745, independent: 85, independent conditional: 0, independent unconditional: 85, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 654, unknown conditional: 0, unknown unconditional: 654] , Statistics on independence cache: Total cache size (in pairs): 971, Positive cache size: 938, Positive conditional cache size: 0, Positive unconditional cache size: 938, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, 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: 3.7s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 146 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 146 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 392 IncrementalHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 16 mSDtfsCounter, 392 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=4, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [2022-12-05 20:25:49,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...