/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-counter-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 13:03:06,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:03:06,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:03:06,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:03:06,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:03:06,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:03:06,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:03:06,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:03:06,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:03:06,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:03:06,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:03:06,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:03:06,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:03:06,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:03:06,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:03:06,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:03:06,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:03:06,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:03:06,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:03:06,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:03:06,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:03:06,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:03:06,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:03:06,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:03:06,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:03:06,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:03:06,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:03:06,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:03:06,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:03:06,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:03:06,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:03:06,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:03:06,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:03:06,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:03:06,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:03:06,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:03:06,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:03:06,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:03:06,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:03:06,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:03:06,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:03:06,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2022-12-13 13:03:06,740 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:03:06,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:03:06,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:03:06,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:03:06,743 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:03:06,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:03:06,744 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:03:06,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:03:06,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:03:06,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:03:06,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:03:06,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:03:06,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:03:06,746 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:03:06,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:03:06,746 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:03:06,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:03:06,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:03:06,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:03:06,747 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 13:03:06,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:03:06,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:03:06,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:03:06,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:03:06,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:03:06,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:03:06,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:03:06,749 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 13:03:06,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 13:03:07,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:03:07,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:03:07,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:03:07,104 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:03:07,104 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:03:07,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-counter-queue.wvr.c [2022-12-13 13:03:08,158 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:03:08,383 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:03:08,383 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-counter-queue.wvr.c [2022-12-13 13:03:08,393 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/225a57c58/dc05847004154f79aa7b193e95bf8c00/FLAG938629e0e [2022-12-13 13:03:08,402 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/225a57c58/dc05847004154f79aa7b193e95bf8c00 [2022-12-13 13:03:08,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:03:08,405 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 13:03:08,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:03:08,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:03:08,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:03:08,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:03:08" (1/1) ... [2022-12-13 13:03:08,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b908409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:03:08, skipping insertion in model container [2022-12-13 13:03:08,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:03:08" (1/1) ... [2022-12-13 13:03:08,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:03:08,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:03:08,602 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:03:08,606 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:03:08,606 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:03:08,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:03:08,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:03:08,611 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:03:08,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:03:08,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:03:08,623 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2022-12-13 13:03:08,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:03:08,652 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:03:08,668 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:03:08,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:03:08,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:03:08,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:03:08,671 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:03:08,674 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:03:08,674 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:03:08,675 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:03:08,687 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2022-12-13 13:03:08,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:03:08,711 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:03:08,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:03:08 WrapperNode [2022-12-13 13:03:08,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:03:08,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:03:08,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:03:08,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:03:08,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:03:08" (1/1) ... [2022-12-13 13:03:08,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:03:08" (1/1) ... [2022-12-13 13:03:08,762 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 144 [2022-12-13 13:03:08,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:03:08,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:03:08,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:03:08,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:03:08,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:03:08" (1/1) ... [2022-12-13 13:03:08,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:03:08" (1/1) ... [2022-12-13 13:03:08,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:03:08" (1/1) ... [2022-12-13 13:03:08,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:03:08" (1/1) ... [2022-12-13 13:03:08,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:03:08" (1/1) ... [2022-12-13 13:03:08,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:03:08" (1/1) ... [2022-12-13 13:03:08,795 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:03:08" (1/1) ... [2022-12-13 13:03:08,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:03:08" (1/1) ... [2022-12-13 13:03:08,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:03:08,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:03:08,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:03:08,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:03:08,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:03:08" (1/1) ... [2022-12-13 13:03:08,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:03:08,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 13:03:08,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:03:08,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:03:08,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:03:08,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:03:08,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:03:08,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:03:08,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 13:03:08,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 13:03:08,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 13:03:08,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 13:03:08,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:03:08,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 13:03:08,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 13:03:08,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:03:08,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:03:08,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:03:08,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:03:08,876 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 13:03:09,019 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 13:03:09,020 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:03:09,231 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 13:03:09,349 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:03:09,349 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 13:03:09,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:03:09 BoogieIcfgContainer [2022-12-13 13:03:09,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:03:09,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:03:09,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:03:09,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:03:09,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:03:08" (1/3) ... [2022-12-13 13:03:09,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245167b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:03:09, skipping insertion in model container [2022-12-13 13:03:09,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:03:08" (2/3) ... [2022-12-13 13:03:09,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245167b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:03:09, skipping insertion in model container [2022-12-13 13:03:09,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:03:09" (3/3) ... [2022-12-13 13:03:09,359 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2022-12-13 13:03:09,374 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:03:09,375 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:03:09,375 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:03:09,424 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 13:03:09,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 109 transitions, 234 flow [2022-12-13 13:03:09,519 INFO L130 PetriNetUnfolder]: 9/107 cut-off events. [2022-12-13 13:03:09,519 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:03:09,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 107 events. 9/107 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2022-12-13 13:03:09,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 109 transitions, 234 flow [2022-12-13 13:03:09,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 99 transitions, 210 flow [2022-12-13 13:03:09,528 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 13:03:09,543 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 99 transitions, 210 flow [2022-12-13 13:03:09,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 99 transitions, 210 flow [2022-12-13 13:03:09,571 INFO L130 PetriNetUnfolder]: 9/99 cut-off events. [2022-12-13 13:03:09,571 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:03:09,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 99 events. 9/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2022-12-13 13:03:09,574 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 99 transitions, 210 flow [2022-12-13 13:03:09,574 INFO L226 LiptonReduction]: Number of co-enabled transitions 572 [2022-12-13 13:03:13,652 INFO L241 LiptonReduction]: Total number of compositions: 80 [2022-12-13 13:03:13,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:03:13,671 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=REPEATED_LIPTON_PN, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@883eeab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 13:03:13,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 13:03:13,676 INFO L130 PetriNetUnfolder]: 3/18 cut-off events. [2022-12-13 13:03:13,676 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:03:13,676 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:03:13,677 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:03:13,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 13:03:13,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:03:13,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2063872509, now seen corresponding path program 1 times [2022-12-13 13:03:13,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:03:13,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135690099] [2022-12-13 13:03:13,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:03:13,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:03:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:14,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:03:14,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:03:14,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135690099] [2022-12-13 13:03:14,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135690099] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:03:14,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:03:14,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:03:14,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096814975] [2022-12-13 13:03:14,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:03:14,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:03:14,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:03:14,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:03:14,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:03:14,125 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 19 [2022-12-13 13:03:14,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:03:14,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:03:14,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 19 [2022-12-13 13:03:14,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:03:14,211 INFO L130 PetriNetUnfolder]: 114/197 cut-off events. [2022-12-13 13:03:14,211 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-13 13:03:14,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 197 events. 114/197 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 723 event pairs, 24 based on Foata normal form. 1/144 useless extension candidates. Maximal degree in co-relation 328. Up to 136 conditions per place. [2022-12-13 13:03:14,214 INFO L137 encePairwiseOnDemand]: 15/19 looper letters, 25 selfloop transitions, 3 changer transitions 1/31 dead transitions. [2022-12-13 13:03:14,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 31 transitions, 141 flow [2022-12-13 13:03:14,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:03:14,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:03:14,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2022-12-13 13:03:14,224 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2022-12-13 13:03:14,225 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 50 flow. Second operand 3 states and 36 transitions. [2022-12-13 13:03:14,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 31 transitions, 141 flow [2022-12-13 13:03:14,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 31 transitions, 127 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 13:03:14,230 INFO L231 Difference]: Finished difference. Result has 22 places, 21 transitions, 61 flow [2022-12-13 13:03:14,231 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=22, PETRI_TRANSITIONS=21} [2022-12-13 13:03:14,235 INFO L295 CegarLoopForPetriNet]: 23 programPoint places, -1 predicate places. [2022-12-13 13:03:14,235 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 13:03:14,236 INFO L89 Accepts]: Start accepts. Operand has 22 places, 21 transitions, 61 flow [2022-12-13 13:03:14,239 INFO L95 Accepts]: Finished accepts. [2022-12-13 13:03:14,239 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 13:03:14,239 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 21 transitions, 61 flow [2022-12-13 13:03:14,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 21 transitions, 61 flow [2022-12-13 13:03:14,245 INFO L130 PetriNetUnfolder]: 8/36 cut-off events. [2022-12-13 13:03:14,245 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:03:14,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 8/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 30. Up to 10 conditions per place. [2022-12-13 13:03:14,248 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 21 transitions, 61 flow [2022-12-13 13:03:14,248 INFO L226 LiptonReduction]: Number of co-enabled transitions 102 [2022-12-13 13:03:14,258 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 13:03:14,260 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 25 [2022-12-13 13:03:14,260 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 21 transitions, 61 flow [2022-12-13 13:03:14,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:03:14,260 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:03:14,260 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:03:14,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:03:14,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 13:03:14,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:03:14,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1182956833, now seen corresponding path program 1 times [2022-12-13 13:03:14,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:03:14,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694065508] [2022-12-13 13:03:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:03:14,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:03:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:03:14,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:03:14,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694065508] [2022-12-13 13:03:14,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694065508] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:03:14,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:03:14,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:03:14,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471286041] [2022-12-13 13:03:14,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:03:14,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:03:14,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:03:14,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:03:14,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:03:14,457 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 19 [2022-12-13 13:03:14,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 21 transitions, 61 flow. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:03:14,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:03:14,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 19 [2022-12-13 13:03:14,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:03:14,616 INFO L130 PetriNetUnfolder]: 178/329 cut-off events. [2022-12-13 13:03:14,616 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-12-13 13:03:14,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 329 events. 178/329 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1381 event pairs, 83 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 276. Up to 207 conditions per place. [2022-12-13 13:03:14,623 INFO L137 encePairwiseOnDemand]: 14/19 looper letters, 39 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2022-12-13 13:03:14,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 44 transitions, 210 flow [2022-12-13 13:03:14,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:03:14,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 13:03:14,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2022-12-13 13:03:14,625 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2022-12-13 13:03:14,625 INFO L175 Difference]: Start difference. First operand has 22 places, 21 transitions, 61 flow. Second operand 5 states and 45 transitions. [2022-12-13 13:03:14,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 44 transitions, 210 flow [2022-12-13 13:03:14,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 44 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:03:14,627 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 86 flow [2022-12-13 13:03:14,627 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2022-12-13 13:03:14,628 INFO L295 CegarLoopForPetriNet]: 23 programPoint places, 5 predicate places. [2022-12-13 13:03:14,628 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 13:03:14,628 INFO L89 Accepts]: Start accepts. Operand has 28 places, 24 transitions, 86 flow [2022-12-13 13:03:14,629 INFO L95 Accepts]: Finished accepts. [2022-12-13 13:03:14,629 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 13:03:14,629 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 24 transitions, 86 flow [2022-12-13 13:03:14,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 86 flow [2022-12-13 13:03:14,636 INFO L130 PetriNetUnfolder]: 9/56 cut-off events. [2022-12-13 13:03:14,636 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 13:03:14,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 56 events. 9/56 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 162 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 51. Up to 13 conditions per place. [2022-12-13 13:03:14,637 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 24 transitions, 86 flow [2022-12-13 13:03:14,637 INFO L226 LiptonReduction]: Number of co-enabled transitions 118 [2022-12-13 13:03:16,186 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 13:03:16,187 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1559 [2022-12-13 13:03:16,187 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 92 flow [2022-12-13 13:03:16,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:03:16,187 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:03:16,187 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:03:16,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:03:16,188 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 13:03:16,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:03:16,188 INFO L85 PathProgramCache]: Analyzing trace with hash -470144639, now seen corresponding path program 1 times [2022-12-13 13:03:16,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:03:16,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427956921] [2022-12-13 13:03:16,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:03:16,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:03:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:03:16,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:03:16,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427956921] [2022-12-13 13:03:16,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427956921] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:03:16,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:03:16,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:03:16,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620993465] [2022-12-13 13:03:16,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:03:16,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:03:16,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:03:16,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:03:16,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:03:16,303 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 21 [2022-12-13 13:03:16,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:03:16,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:03:16,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 21 [2022-12-13 13:03:16,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:03:16,381 INFO L130 PetriNetUnfolder]: 132/246 cut-off events. [2022-12-13 13:03:16,381 INFO L131 PetriNetUnfolder]: For 45/52 co-relation queries the response was YES. [2022-12-13 13:03:16,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 246 events. 132/246 cut-off events. For 45/52 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 954 event pairs, 81 based on Foata normal form. 7/231 useless extension candidates. Maximal degree in co-relation 482. Up to 206 conditions per place. [2022-12-13 13:03:16,384 INFO L137 encePairwiseOnDemand]: 18/21 looper letters, 20 selfloop transitions, 0 changer transitions 17/38 dead transitions. [2022-12-13 13:03:16,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 197 flow [2022-12-13 13:03:16,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:03:16,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:03:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 39 transitions. [2022-12-13 13:03:16,387 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2022-12-13 13:03:16,388 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 92 flow. Second operand 4 states and 39 transitions. [2022-12-13 13:03:16,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 197 flow [2022-12-13 13:03:16,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 38 transitions, 189 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 13:03:16,390 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 70 flow [2022-12-13 13:03:16,390 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2022-12-13 13:03:16,391 INFO L295 CegarLoopForPetriNet]: 23 programPoint places, 9 predicate places. [2022-12-13 13:03:16,391 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 13:03:16,391 INFO L89 Accepts]: Start accepts. Operand has 32 places, 21 transitions, 70 flow [2022-12-13 13:03:16,394 INFO L95 Accepts]: Finished accepts. [2022-12-13 13:03:16,394 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 13:03:16,394 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 21 transitions, 70 flow [2022-12-13 13:03:16,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 21 transitions, 70 flow [2022-12-13 13:03:16,399 INFO L130 PetriNetUnfolder]: 8/36 cut-off events. [2022-12-13 13:03:16,399 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:03:16,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 36 events. 8/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 51. Up to 10 conditions per place. [2022-12-13 13:03:16,400 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 21 transitions, 70 flow [2022-12-13 13:03:16,400 INFO L226 LiptonReduction]: Number of co-enabled transitions 102 [2022-12-13 13:03:16,400 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 13:03:16,401 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 10 [2022-12-13 13:03:16,402 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 70 flow [2022-12-13 13:03:16,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:03:16,402 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:03:16,402 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:03:16,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:03:16,402 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 13:03:16,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:03:16,403 INFO L85 PathProgramCache]: Analyzing trace with hash 433099917, now seen corresponding path program 1 times [2022-12-13 13:03:16,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:03:16,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72471481] [2022-12-13 13:03:16,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:03:16,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:03:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:03:16,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:03:16,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72471481] [2022-12-13 13:03:16,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72471481] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:03:16,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:03:16,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:03:16,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967042212] [2022-12-13 13:03:16,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:03:16,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:03:16,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:03:16,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:03:16,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:03:16,500 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 19 [2022-12-13 13:03:16,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:03:16,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:03:16,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 19 [2022-12-13 13:03:16,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:03:16,550 INFO L130 PetriNetUnfolder]: 128/223 cut-off events. [2022-12-13 13:03:16,551 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-12-13 13:03:16,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 223 events. 128/223 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 760 event pairs, 45 based on Foata normal form. 16/236 useless extension candidates. Maximal degree in co-relation 566. Up to 146 conditions per place. [2022-12-13 13:03:16,552 INFO L137 encePairwiseOnDemand]: 15/19 looper letters, 25 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2022-12-13 13:03:16,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 157 flow [2022-12-13 13:03:16,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:03:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:03:16,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 31 transitions. [2022-12-13 13:03:16,554 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2022-12-13 13:03:16,554 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 70 flow. Second operand 4 states and 31 transitions. [2022-12-13 13:03:16,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 157 flow [2022-12-13 13:03:16,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 30 transitions, 139 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-12-13 13:03:16,556 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 75 flow [2022-12-13 13:03:16,556 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=75, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2022-12-13 13:03:16,556 INFO L295 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2022-12-13 13:03:16,556 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 13:03:16,557 INFO L89 Accepts]: Start accepts. Operand has 25 places, 22 transitions, 75 flow [2022-12-13 13:03:16,557 INFO L95 Accepts]: Finished accepts. [2022-12-13 13:03:16,557 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 13:03:16,557 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 22 transitions, 75 flow [2022-12-13 13:03:16,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 22 transitions, 75 flow [2022-12-13 13:03:16,561 INFO L130 PetriNetUnfolder]: 7/33 cut-off events. [2022-12-13 13:03:16,561 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 13:03:16,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 33 events. 7/33 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 36. Up to 9 conditions per place. [2022-12-13 13:03:16,562 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 22 transitions, 75 flow [2022-12-13 13:03:16,562 INFO L226 LiptonReduction]: Number of co-enabled transitions 110 [2022-12-13 13:03:16,568 ERROR L806 SequenceRule]: Run adaptation not supported for post-scripts [2022-12-13 13:03:16,569 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 13:03:16,570 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 14 [2022-12-13 13:03:16,570 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 61 flow [2022-12-13 13:03:16,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:03:16,570 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:03:16,570 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:03:16,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:03:16,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 13:03:16,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:03:16,571 INFO L85 PathProgramCache]: Analyzing trace with hash -259439573, now seen corresponding path program 1 times [2022-12-13 13:03:16,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:03:16,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986139413] [2022-12-13 13:03:16,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:03:16,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:03:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:03:16,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:03:16,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986139413] [2022-12-13 13:03:16,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986139413] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:03:16,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:03:16,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:03:16,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162846354] [2022-12-13 13:03:16,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:03:16,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:03:16,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:03:16,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:03:16,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:03:16,639 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 19 [2022-12-13 13:03:16,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 61 flow. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:03:16,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:03:16,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 19 [2022-12-13 13:03:16,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:03:16,675 INFO L130 PetriNetUnfolder]: 40/84 cut-off events. [2022-12-13 13:03:16,675 INFO L131 PetriNetUnfolder]: For 2/11 co-relation queries the response was YES. [2022-12-13 13:03:16,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 84 events. 40/84 cut-off events. For 2/11 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 251 event pairs, 21 based on Foata normal form. 9/84 useless extension candidates. Maximal degree in co-relation 113. Up to 58 conditions per place. [2022-12-13 13:03:16,676 INFO L137 encePairwiseOnDemand]: 15/19 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2022-12-13 13:03:16,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 97 flow [2022-12-13 13:03:16,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:03:16,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:03:16,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2022-12-13 13:03:16,677 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.32894736842105265 [2022-12-13 13:03:16,677 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 61 flow. Second operand 4 states and 25 transitions. [2022-12-13 13:03:16,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 97 flow [2022-12-13 13:03:16,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 21 transitions, 93 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 13:03:16,678 INFO L231 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2022-12-13 13:03:16,678 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2022-12-13 13:03:16,678 INFO L295 CegarLoopForPetriNet]: 23 programPoint places, -1 predicate places. [2022-12-13 13:03:16,679 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 13:03:16,679 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 0 transitions, 0 flow [2022-12-13 13:03:16,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2022-12-13 13:03:16,679 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 13:03:16,679 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:03:16,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2022-12-13 13:03:16,680 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 0 places, 0 transitions, 0 flow [2022-12-13 13:03:16,680 INFO L226 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-13 13:03:16,680 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 13:03:16,681 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2 [2022-12-13 13:03:16,681 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-13 13:03:16,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:03:16,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-13 13:03:16,684 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-13 13:03:16,684 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-13 13:03:16,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:03:16,684 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-13 13:03:16,687 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 13:03:16,687 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:03:16,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:03:16 BasicIcfg [2022-12-13 13:03:16,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:03:16,690 INFO L158 Benchmark]: Toolchain (without parser) took 8284.63ms. Allocated memory was 187.7MB in the beginning and 270.5MB in the end (delta: 82.8MB). Free memory was 164.7MB in the beginning and 118.7MB in the end (delta: 46.1MB). Peak memory consumption was 129.4MB. Max. memory is 8.0GB. [2022-12-13 13:03:16,690 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory is still 165.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-13 13:03:16,690 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.08ms. Allocated memory is still 187.7MB. Free memory was 164.7MB in the beginning and 152.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-13 13:03:16,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.58ms. Allocated memory is still 187.7MB. Free memory was 152.2MB in the beginning and 150.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-13 13:03:16,691 INFO L158 Benchmark]: Boogie Preprocessor took 34.58ms. Allocated memory is still 187.7MB. Free memory was 150.6MB in the beginning and 149.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-13 13:03:16,691 INFO L158 Benchmark]: RCFGBuilder took 553.25ms. Allocated memory is still 187.7MB. Free memory was 148.5MB in the beginning and 124.4MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-12-13 13:03:16,691 INFO L158 Benchmark]: TraceAbstraction took 7335.76ms. Allocated memory was 187.7MB in the beginning and 270.5MB in the end (delta: 82.8MB). Free memory was 122.8MB in the beginning and 118.7MB in the end (delta: 4.1MB). Peak memory consumption was 87.5MB. Max. memory is 8.0GB. [2022-12-13 13:03:16,693 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 187.7MB. Free memory is still 165.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 306.08ms. Allocated memory is still 187.7MB. Free memory was 164.7MB in the beginning and 152.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.58ms. Allocated memory is still 187.7MB. Free memory was 152.2MB in the beginning and 150.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.58ms. Allocated memory is still 187.7MB. Free memory was 150.6MB in the beginning and 149.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 553.25ms. Allocated memory is still 187.7MB. Free memory was 148.5MB in the beginning and 124.4MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 7335.76ms. Allocated memory was 187.7MB in the beginning and 270.5MB in the end (delta: 82.8MB). Free memory was 122.8MB in the beginning and 118.7MB in the end (delta: 4.1MB). Peak memory consumption was 87.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 97 PlacesBefore, 23 PlacesAfterwards, 99 TransitionsBefore, 19 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 55 TrivialYvCompositions, 19 ConcurrentYvCompositions, 6 ChoiceCompositions, 80 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 340, independent: 324, independent conditional: 324, independent unconditional: 0, dependent: 16, dependent conditional: 16, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 340, independent: 324, independent conditional: 0, independent unconditional: 324, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 340, independent: 324, independent conditional: 0, independent unconditional: 324, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 340, independent: 324, independent conditional: 0, independent unconditional: 324, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 317, independent: 306, independent conditional: 0, independent unconditional: 306, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 317, independent: 306, independent conditional: 0, independent unconditional: 306, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 11, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 47, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 340, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 317, unknown conditional: 0, unknown unconditional: 317] , Statistics on independence cache: Total cache size (in pairs): 499, Positive cache size: 488, Positive conditional cache size: 0, Positive unconditional cache size: 488, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 22 PlacesBefore, 22 PlacesAfterwards, 21 TransitionsBefore, 21 TransitionsAfterwards, 102 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, independent: 5, independent conditional: 5, independent unconditional: 0, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 7, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 7, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 7, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 8, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 8, dependent conditional: 3, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 7, unknown conditional: 1, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 2, Negative conditional cache size: 1, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 28 PlacesBefore, 28 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 118 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 3, dependent conditional: 3, dependent unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 3, Negative conditional cache size: 2, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 26 PlacesBefore, 26 PlacesAfterwards, 21 TransitionsBefore, 21 TransitionsAfterwards, 102 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, independent: 6, independent conditional: 6, independent unconditional: 0, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 8, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 8, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 8, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 9, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 3, Negative conditional cache size: 2, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 25 PlacesBefore, 25 PlacesAfterwards, 22 TransitionsBefore, 20 TransitionsAfterwards, 110 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 32, independent: 28, independent conditional: 28, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 32, independent: 28, independent conditional: 16, independent unconditional: 12, dependent: 4, dependent conditional: 3, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 32, independent: 28, independent conditional: 4, independent unconditional: 24, dependent: 4, dependent conditional: 3, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 32, independent: 28, independent conditional: 4, independent unconditional: 24, dependent: 4, dependent conditional: 3, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9, independent: 8, independent conditional: 2, independent unconditional: 6, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 3, dependent conditional: 3, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 32, independent: 20, independent conditional: 2, independent unconditional: 18, dependent: 3, dependent conditional: 2, dependent unconditional: 1, unknown: 9, unknown conditional: 3, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 14, Positive conditional cache size: 2, Positive unconditional cache size: 12, Negative cache size: 4, Negative conditional cache size: 3, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 12, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 0 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 14, Positive conditional cache size: 2, Positive unconditional cache size: 12, Negative cache size: 4, Negative conditional cache size: 3, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 87]: 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 5 procedures, 123 locations, 3 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: 7.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 86 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 86 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 225 IncrementalHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 4 mSDtfsCounter, 225 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=2, InterpolantAutomatonStates: 20, 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, 0.6s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 174 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 13:03:16,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...