./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 26b6897a83c9df9076ea7ea4c612ce46453382fa627c0d6af54da2d169befd96 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:22:08,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:22:08,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:22:08,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:22:08,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:22:08,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:22:08,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:22:08,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:22:08,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:22:08,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:22:08,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:22:08,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:22:08,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:22:08,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:22:08,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:22:08,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:22:08,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:22:08,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:22:08,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:22:08,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:22:08,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:22:08,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:22:08,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:22:08,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:22:08,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:22:08,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:22:08,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:22:08,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:22:08,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:22:08,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:22:08,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:22:08,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:22:08,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:22:08,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:22:08,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:22:08,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:22:08,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:22:08,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:22:08,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:22:08,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:22:08,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:22:08,772 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:22:08,806 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:22:08,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:22:08,807 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:22:08,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:22:08,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:22:08,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:22:08,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:22:08,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:22:08,809 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:22:08,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:22:08,810 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:22:08,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:22:08,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:22:08,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:22:08,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:22:08,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:22:08,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:22:08,812 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:22:08,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:22:08,812 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:22:08,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:22:08,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:22:08,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:22:08,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:22:08,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:22:08,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:22:08,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:22:08,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:22:08,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:22:08,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:22:08,814 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:22:08,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:22:08,815 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:22:08,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:22:08,815 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:22:08,815 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26b6897a83c9df9076ea7ea4c612ce46453382fa627c0d6af54da2d169befd96 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:22:09,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:22:09,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:22:09,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:22:09,101 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:22:09,102 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:22:09,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.i [2023-08-30 23:22:10,341 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:22:10,613 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:22:10,616 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.i [2023-08-30 23:22:10,632 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/293147bac/f17d19e7fc754196a787c920d4509425/FLAG4f1561619 [2023-08-30 23:22:10,643 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/293147bac/f17d19e7fc754196a787c920d4509425 [2023-08-30 23:22:10,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:22:10,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:22:10,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:22:10,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:22:10,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:22:10,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:22:10" (1/1) ... [2023-08-30 23:22:10,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728309b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:10, skipping insertion in model container [2023-08-30 23:22:10,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:22:10" (1/1) ... [2023-08-30 23:22:10,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:22:10,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:22:10,821 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.i[945,958] [2023-08-30 23:22:11,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:22:11,013 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:22:11,027 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.i[945,958] [2023-08-30 23:22:11,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:22:11,117 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:22:11,117 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:22:11,123 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:22:11,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:11 WrapperNode [2023-08-30 23:22:11,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:22:11,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:22:11,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:22:11,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:22:11,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:11" (1/1) ... [2023-08-30 23:22:11,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:11" (1/1) ... [2023-08-30 23:22:11,183 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-08-30 23:22:11,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:22:11,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:22:11,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:22:11,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:22:11,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:11" (1/1) ... [2023-08-30 23:22:11,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:11" (1/1) ... [2023-08-30 23:22:11,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:11" (1/1) ... [2023-08-30 23:22:11,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:11" (1/1) ... [2023-08-30 23:22:11,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:11" (1/1) ... [2023-08-30 23:22:11,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:11" (1/1) ... [2023-08-30 23:22:11,224 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:11" (1/1) ... [2023-08-30 23:22:11,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:11" (1/1) ... [2023-08-30 23:22:11,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:22:11,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:22:11,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:22:11,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:22:11,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:11" (1/1) ... [2023-08-30 23:22:11,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:22:11,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:22:11,260 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) [2023-08-30 23:22:11,293 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 [2023-08-30 23:22:11,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:22:11,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:22:11,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:22:11,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:22:11,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:22:11,308 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 23:22:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 23:22:11,308 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 23:22:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 23:22:11,308 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 23:22:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 23:22:11,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:22:11,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:22:11,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:22:11,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:22:11,310 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 23:22:11,498 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:22:11,500 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:22:11,621 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:22:11,627 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:22:11,627 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 23:22:11,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:22:11 BoogieIcfgContainer [2023-08-30 23:22:11,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:22:11,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:22:11,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:22:11,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:22:11,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:22:10" (1/3) ... [2023-08-30 23:22:11,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e53b7be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:22:11, skipping insertion in model container [2023-08-30 23:22:11,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:11" (2/3) ... [2023-08-30 23:22:11,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e53b7be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:22:11, skipping insertion in model container [2023-08-30 23:22:11,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:22:11" (3/3) ... [2023-08-30 23:22:11,636 INFO L112 eAbstractionObserver]: Analyzing ICFG safe031_tso.i [2023-08-30 23:22:11,642 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:22:11,650 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:22:11,651 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 23:22:11,651 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:22:11,698 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 23:22:11,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-08-30 23:22:11,771 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2023-08-30 23:22:11,771 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:22:11,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-30 23:22:11,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-08-30 23:22:11,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-08-30 23:22:11,791 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:22:11,808 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-30 23:22:11,816 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-30 23:22:11,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-08-30 23:22:11,835 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2023-08-30 23:22:11,835 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:22:11,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-30 23:22:11,839 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-30 23:22:13,716 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-08-30 23:22:13,716 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-08-30 23:22:13,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:22:13,735 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f14def4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:22:13,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 23:22:13,740 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-30 23:22:13,740 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:22:13,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:13,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:13,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:22:13,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:13,746 INFO L85 PathProgramCache]: Analyzing trace with hash -856235508, now seen corresponding path program 1 times [2023-08-30 23:22:13,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:13,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217608520] [2023-08-30 23:22:13,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:13,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:14,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:14,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217608520] [2023-08-30 23:22:14,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217608520] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:14,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:14,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:22:14,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013393017] [2023-08-30 23:22:14,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:14,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:22:14,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:14,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:22:14,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:22:14,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 139 [2023-08-30 23:22:14,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2023-08-30 23:22:14,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:14,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 139 [2023-08-30 23:22:14,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:14,589 INFO L130 PetriNetUnfolder]: 573/928 cut-off events. [2023-08-30 23:22:14,589 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 23:22:14,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 928 events. 573/928 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4189 event pairs, 207 based on Foata normal form. 50/978 useless extension candidates. Maximal degree in co-relation 1904. Up to 539 conditions per place. [2023-08-30 23:22:14,600 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 25 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-08-30 23:22:14,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-08-30 23:22:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:22:14,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:22:14,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2023-08-30 23:22:14,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.580335731414868 [2023-08-30 23:22:14,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2023-08-30 23:22:14,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2023-08-30 23:22:14,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:14,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2023-08-30 23:22:14,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2023-08-30 23:22:14,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2023-08-30 23:22:14,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2023-08-30 23:22:14,633 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 242 transitions. [2023-08-30 23:22:14,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-08-30 23:22:14,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 23:22:14,637 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-08-30 23:22:14,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-30 23:22:14,643 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-30 23:22:14,644 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-08-30 23:22:14,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2023-08-30 23:22:14,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:14,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:14,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:22:14,648 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:22:14,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:14,649 INFO L85 PathProgramCache]: Analyzing trace with hash -773497558, now seen corresponding path program 1 times [2023-08-30 23:22:14,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:14,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352361983] [2023-08-30 23:22:14,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:14,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:14,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:14,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352361983] [2023-08-30 23:22:14,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352361983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:14,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:14,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:22:14,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011112322] [2023-08-30 23:22:14,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:14,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:22:14,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:14,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:22:14,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:22:14,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 139 [2023-08-30 23:22:14,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2023-08-30 23:22:14,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:14,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 139 [2023-08-30 23:22:14,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:14,992 INFO L130 PetriNetUnfolder]: 550/893 cut-off events. [2023-08-30 23:22:14,992 INFO L131 PetriNetUnfolder]: For 303/303 co-relation queries the response was YES. [2023-08-30 23:22:14,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2434 conditions, 893 events. 550/893 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3781 event pairs, 89 based on Foata normal form. 6/899 useless extension candidates. Maximal degree in co-relation 2422. Up to 446 conditions per place. [2023-08-30 23:22:14,999 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 30 selfloop transitions, 10 changer transitions 0/40 dead transitions. [2023-08-30 23:22:14,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 224 flow [2023-08-30 23:22:15,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:22:15,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:22:15,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2023-08-30 23:22:15,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5737410071942446 [2023-08-30 23:22:15,002 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 319 transitions. [2023-08-30 23:22:15,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 319 transitions. [2023-08-30 23:22:15,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:15,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 319 transitions. [2023-08-30 23:22:15,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 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) [2023-08-30 23:22:15,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-08-30 23:22:15,006 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-08-30 23:22:15,006 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 319 transitions. [2023-08-30 23:22:15,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 224 flow [2023-08-30 23:22:15,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:22:15,010 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 134 flow [2023-08-30 23:22:15,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2023-08-30 23:22:15,011 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-08-30 23:22:15,011 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 134 flow [2023-08-30 23:22:15,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2023-08-30 23:22:15,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:15,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:15,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:22:15,013 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:22:15,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:15,013 INFO L85 PathProgramCache]: Analyzing trace with hash -773498240, now seen corresponding path program 1 times [2023-08-30 23:22:15,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:15,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487389810] [2023-08-30 23:22:15,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:15,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:15,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:15,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487389810] [2023-08-30 23:22:15,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487389810] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:15,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:15,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:22:15,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906551548] [2023-08-30 23:22:15,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:15,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:22:15,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:15,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:22:15,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:22:15,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 139 [2023-08-30 23:22:15,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2023-08-30 23:22:15,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:15,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 139 [2023-08-30 23:22:15,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:15,280 INFO L130 PetriNetUnfolder]: 526/855 cut-off events. [2023-08-30 23:22:15,280 INFO L131 PetriNetUnfolder]: For 471/471 co-relation queries the response was YES. [2023-08-30 23:22:15,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2530 conditions, 855 events. 526/855 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3641 event pairs, 79 based on Foata normal form. 4/859 useless extension candidates. Maximal degree in co-relation 2516. Up to 476 conditions per place. [2023-08-30 23:22:15,287 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 34 selfloop transitions, 12 changer transitions 0/46 dead transitions. [2023-08-30 23:22:15,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 46 transitions, 292 flow [2023-08-30 23:22:15,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:22:15,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:22:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 320 transitions. [2023-08-30 23:22:15,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5755395683453237 [2023-08-30 23:22:15,289 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 320 transitions. [2023-08-30 23:22:15,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 320 transitions. [2023-08-30 23:22:15,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:15,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 320 transitions. [2023-08-30 23:22:15,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2023-08-30 23:22:15,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-08-30 23:22:15,293 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-08-30 23:22:15,293 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 134 flow. Second operand 4 states and 320 transitions. [2023-08-30 23:22:15,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 46 transitions, 292 flow [2023-08-30 23:22:15,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 23:22:15,298 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 222 flow [2023-08-30 23:22:15,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-08-30 23:22:15,299 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-08-30 23:22:15,302 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 222 flow [2023-08-30 23:22:15,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2023-08-30 23:22:15,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:15,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:15,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:22:15,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:22:15,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:15,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1791378210, now seen corresponding path program 1 times [2023-08-30 23:22:15,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:15,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608355707] [2023-08-30 23:22:15,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:15,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:15,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:15,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608355707] [2023-08-30 23:22:15,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608355707] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:15,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:15,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:22:15,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559217523] [2023-08-30 23:22:15,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:15,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:22:15,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:15,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:22:15,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:22:15,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 139 [2023-08-30 23:22:15,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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) [2023-08-30 23:22:15,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:15,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 139 [2023-08-30 23:22:15,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:15,575 INFO L130 PetriNetUnfolder]: 310/600 cut-off events. [2023-08-30 23:22:15,575 INFO L131 PetriNetUnfolder]: For 1324/1386 co-relation queries the response was YES. [2023-08-30 23:22:15,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1927 conditions, 600 events. 310/600 cut-off events. For 1324/1386 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3233 event pairs, 55 based on Foata normal form. 73/654 useless extension candidates. Maximal degree in co-relation 1908. Up to 330 conditions per place. [2023-08-30 23:22:15,580 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 48 selfloop transitions, 8 changer transitions 5/72 dead transitions. [2023-08-30 23:22:15,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 72 transitions, 588 flow [2023-08-30 23:22:15,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:22:15,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:22:15,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 404 transitions. [2023-08-30 23:22:15,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.581294964028777 [2023-08-30 23:22:15,583 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 404 transitions. [2023-08-30 23:22:15,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 404 transitions. [2023-08-30 23:22:15,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:15,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 404 transitions. [2023-08-30 23:22:15,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 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) [2023-08-30 23:22:15,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-08-30 23:22:15,602 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-08-30 23:22:15,602 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 222 flow. Second operand 5 states and 404 transitions. [2023-08-30 23:22:15,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 72 transitions, 588 flow [2023-08-30 23:22:15,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 72 transitions, 588 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 23:22:15,606 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 282 flow [2023-08-30 23:22:15,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-08-30 23:22:15,607 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-08-30 23:22:15,607 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 282 flow [2023-08-30 23:22:15,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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) [2023-08-30 23:22:15,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:15,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:15,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:22:15,609 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:22:15,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:15,609 INFO L85 PathProgramCache]: Analyzing trace with hash -352740669, now seen corresponding path program 1 times [2023-08-30 23:22:15,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:15,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202096138] [2023-08-30 23:22:15,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:15,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:15,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:15,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:15,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202096138] [2023-08-30 23:22:15,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202096138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:15,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:15,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:22:15,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275669422] [2023-08-30 23:22:15,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:15,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:22:15,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:15,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:22:15,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:22:15,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 139 [2023-08-30 23:22:15,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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) [2023-08-30 23:22:15,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:15,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 139 [2023-08-30 23:22:15,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:15,883 INFO L130 PetriNetUnfolder]: 276/555 cut-off events. [2023-08-30 23:22:15,884 INFO L131 PetriNetUnfolder]: For 1719/1911 co-relation queries the response was YES. [2023-08-30 23:22:15,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 555 events. 276/555 cut-off events. For 1719/1911 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3049 event pairs, 22 based on Foata normal form. 151/688 useless extension candidates. Maximal degree in co-relation 2289. Up to 251 conditions per place. [2023-08-30 23:22:15,888 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 52 selfloop transitions, 15 changer transitions 11/89 dead transitions. [2023-08-30 23:22:15,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 89 transitions, 786 flow [2023-08-30 23:22:15,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:22:15,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:22:15,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 565 transitions. [2023-08-30 23:22:15,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806783144912642 [2023-08-30 23:22:15,890 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 565 transitions. [2023-08-30 23:22:15,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 565 transitions. [2023-08-30 23:22:15,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:15,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 565 transitions. [2023-08-30 23:22:15,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 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) [2023-08-30 23:22:15,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 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) [2023-08-30 23:22:15,895 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 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) [2023-08-30 23:22:15,895 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 282 flow. Second operand 7 states and 565 transitions. [2023-08-30 23:22:15,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 89 transitions, 786 flow [2023-08-30 23:22:15,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 89 transitions, 782 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:22:15,900 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 377 flow [2023-08-30 23:22:15,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=377, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-08-30 23:22:15,901 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-08-30 23:22:15,901 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 377 flow [2023-08-30 23:22:15,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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) [2023-08-30 23:22:15,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:15,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:15,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:22:15,902 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:22:15,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:15,902 INFO L85 PathProgramCache]: Analyzing trace with hash 452420666, now seen corresponding path program 1 times [2023-08-30 23:22:15,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:15,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803724105] [2023-08-30 23:22:15,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:15,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:16,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:16,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:16,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803724105] [2023-08-30 23:22:16,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803724105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:16,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:16,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:22:16,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306143290] [2023-08-30 23:22:16,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:16,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:22:16,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:16,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:22:16,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:22:16,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-08-30 23:22:16,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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) [2023-08-30 23:22:16,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:16,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-08-30 23:22:16,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:16,187 INFO L130 PetriNetUnfolder]: 496/879 cut-off events. [2023-08-30 23:22:16,187 INFO L131 PetriNetUnfolder]: For 4076/4076 co-relation queries the response was YES. [2023-08-30 23:22:16,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4326 conditions, 879 events. 496/879 cut-off events. For 4076/4076 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4349 event pairs, 33 based on Foata normal form. 7/886 useless extension candidates. Maximal degree in co-relation 4298. Up to 534 conditions per place. [2023-08-30 23:22:16,193 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 46 selfloop transitions, 22 changer transitions 39/107 dead transitions. [2023-08-30 23:22:16,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 107 transitions, 1071 flow [2023-08-30 23:22:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:22:16,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:22:16,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2023-08-30 23:22:16,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611510791366906 [2023-08-30 23:22:16,195 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2023-08-30 23:22:16,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2023-08-30 23:22:16,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:16,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2023-08-30 23:22:16,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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) [2023-08-30 23:22:16,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-08-30 23:22:16,198 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-08-30 23:22:16,198 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 377 flow. Second operand 5 states and 390 transitions. [2023-08-30 23:22:16,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 107 transitions, 1071 flow [2023-08-30 23:22:16,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 107 transitions, 954 flow, removed 44 selfloop flow, removed 2 redundant places. [2023-08-30 23:22:16,213 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 451 flow [2023-08-30 23:22:16,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=451, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-08-30 23:22:16,214 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2023-08-30 23:22:16,214 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 451 flow [2023-08-30 23:22:16,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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) [2023-08-30 23:22:16,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:16,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:16,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 23:22:16,216 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:22:16,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:16,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1942239925, now seen corresponding path program 1 times [2023-08-30 23:22:16,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:16,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502977094] [2023-08-30 23:22:16,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:16,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:16,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:16,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:16,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502977094] [2023-08-30 23:22:16,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502977094] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:16,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:16,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:22:16,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061754859] [2023-08-30 23:22:16,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:16,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:22:16,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:16,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:22:16,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:22:16,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 139 [2023-08-30 23:22:16,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 451 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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) [2023-08-30 23:22:16,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:16,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 139 [2023-08-30 23:22:16,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:16,435 INFO L130 PetriNetUnfolder]: 232/478 cut-off events. [2023-08-30 23:22:16,436 INFO L131 PetriNetUnfolder]: For 1957/1957 co-relation queries the response was YES. [2023-08-30 23:22:16,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2416 conditions, 478 events. 232/478 cut-off events. For 1957/1957 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2204 event pairs, 44 based on Foata normal form. 2/480 useless extension candidates. Maximal degree in co-relation 2384. Up to 236 conditions per place. [2023-08-30 23:22:16,439 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 38 selfloop transitions, 19 changer transitions 17/74 dead transitions. [2023-08-30 23:22:16,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 74 transitions, 776 flow [2023-08-30 23:22:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:22:16,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:22:16,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 320 transitions. [2023-08-30 23:22:16,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5755395683453237 [2023-08-30 23:22:16,441 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 320 transitions. [2023-08-30 23:22:16,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 320 transitions. [2023-08-30 23:22:16,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:16,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 320 transitions. [2023-08-30 23:22:16,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2023-08-30 23:22:16,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-08-30 23:22:16,444 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-08-30 23:22:16,444 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 451 flow. Second operand 4 states and 320 transitions. [2023-08-30 23:22:16,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 74 transitions, 776 flow [2023-08-30 23:22:16,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 74 transitions, 740 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-08-30 23:22:16,452 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 429 flow [2023-08-30 23:22:16,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=429, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-08-30 23:22:16,453 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-08-30 23:22:16,453 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 429 flow [2023-08-30 23:22:16,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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) [2023-08-30 23:22:16,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:16,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:16,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 23:22:16,454 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:22:16,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:16,455 INFO L85 PathProgramCache]: Analyzing trace with hash -138861841, now seen corresponding path program 2 times [2023-08-30 23:22:16,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:16,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396562823] [2023-08-30 23:22:16,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:16,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:16,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:16,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396562823] [2023-08-30 23:22:16,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396562823] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:16,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:16,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:22:16,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602494554] [2023-08-30 23:22:16,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:16,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:22:16,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:16,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:22:16,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:22:16,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 139 [2023-08-30 23:22:16,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 429 flow. Second operand has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 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) [2023-08-30 23:22:16,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:16,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 139 [2023-08-30 23:22:16,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:16,706 INFO L130 PetriNetUnfolder]: 111/262 cut-off events. [2023-08-30 23:22:16,706 INFO L131 PetriNetUnfolder]: For 1248/1288 co-relation queries the response was YES. [2023-08-30 23:22:16,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 262 events. 111/262 cut-off events. For 1248/1288 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1230 event pairs, 12 based on Foata normal form. 28/278 useless extension candidates. Maximal degree in co-relation 1253. Up to 87 conditions per place. [2023-08-30 23:22:16,708 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2023-08-30 23:22:16,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 773 flow [2023-08-30 23:22:16,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:22:16,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:22:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 550 transitions. [2023-08-30 23:22:16,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652620760534429 [2023-08-30 23:22:16,710 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 550 transitions. [2023-08-30 23:22:16,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 550 transitions. [2023-08-30 23:22:16,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:16,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 550 transitions. [2023-08-30 23:22:16,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 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) [2023-08-30 23:22:16,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 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) [2023-08-30 23:22:16,714 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 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) [2023-08-30 23:22:16,714 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 429 flow. Second operand 7 states and 550 transitions. [2023-08-30 23:22:16,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 773 flow [2023-08-30 23:22:16,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 67 transitions, 698 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 23:22:16,719 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-08-30 23:22:16,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-08-30 23:22:16,721 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2023-08-30 23:22:16,721 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-08-30 23:22:16,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 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) [2023-08-30 23:22:16,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 23:22:16,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-30 23:22:16,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 23:22:16,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 23:22:16,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 23:22:16,726 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:16,728 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:22:16,729 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:22:16,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:22:16 BasicIcfg [2023-08-30 23:22:16,738 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:22:16,738 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:22:16,738 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:22:16,739 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:22:16,739 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:22:11" (3/4) ... [2023-08-30 23:22:16,742 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 23:22:16,748 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 23:22:16,748 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 23:22:16,748 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-30 23:22:16,753 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-30 23:22:16,753 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 23:22:16,753 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 23:22:16,753 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 23:22:16,784 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:22:16,785 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:22:16,785 INFO L158 Benchmark]: Toolchain (without parser) took 6138.21ms. Allocated memory was 83.9MB in the beginning and 146.8MB in the end (delta: 62.9MB). Free memory was 60.3MB in the beginning and 89.3MB in the end (delta: -29.1MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. [2023-08-30 23:22:16,785 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:22:16,785 INFO L158 Benchmark]: CACSL2BoogieTranslator took 476.22ms. Allocated memory is still 83.9MB. Free memory was 60.0MB in the beginning and 60.0MB in the end (delta: 48.3kB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2023-08-30 23:22:16,786 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.37ms. Allocated memory is still 83.9MB. Free memory was 60.0MB in the beginning and 57.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:22:16,786 INFO L158 Benchmark]: Boogie Preprocessor took 45.85ms. Allocated memory is still 83.9MB. Free memory was 57.8MB in the beginning and 56.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:22:16,786 INFO L158 Benchmark]: RCFGBuilder took 398.23ms. Allocated memory is still 83.9MB. Free memory was 56.7MB in the beginning and 43.2MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 23:22:16,786 INFO L158 Benchmark]: TraceAbstraction took 5107.31ms. Allocated memory was 83.9MB in the beginning and 146.8MB in the end (delta: 62.9MB). Free memory was 42.3MB in the beginning and 92.5MB in the end (delta: -50.1MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2023-08-30 23:22:16,787 INFO L158 Benchmark]: Witness Printer took 46.24ms. Allocated memory is still 146.8MB. Free memory was 92.5MB in the beginning and 89.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:22:16,788 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 476.22ms. Allocated memory is still 83.9MB. Free memory was 60.0MB in the beginning and 60.0MB in the end (delta: 48.3kB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.37ms. Allocated memory is still 83.9MB. Free memory was 60.0MB in the beginning and 57.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.85ms. Allocated memory is still 83.9MB. Free memory was 57.8MB in the beginning and 56.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 398.23ms. Allocated memory is still 83.9MB. Free memory was 56.7MB in the beginning and 43.2MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5107.31ms. Allocated memory was 83.9MB in the beginning and 146.8MB in the end (delta: 62.9MB). Free memory was 42.3MB in the beginning and 92.5MB in the end (delta: -50.1MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Witness Printer took 46.24ms. Allocated memory is still 146.8MB. Free memory was 92.5MB in the beginning and 89.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1164, independent: 1087, independent conditional: 0, independent unconditional: 1087, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 570, independent: 548, independent conditional: 0, independent unconditional: 548, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1164, independent: 539, independent conditional: 0, independent unconditional: 539, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 570, unknown conditional: 0, unknown unconditional: 570] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 263 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 180 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 492 IncrementalHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 44 mSDtfsCounter, 492 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=451occurred in iteration=6, InterpolantAutomatonStates: 39, 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, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 398 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 23:22:16,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE