./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe021_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/safe021_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 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 --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 23:21:03,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:21:03,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:21:03,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:21:03,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:21:03,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:21:03,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:21:03,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:21:03,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:21:03,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:21:03,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:21:03,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:21:03,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:21:03,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:21:03,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:21:03,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:21:03,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:21:03,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:21:03,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:21:03,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:21:03,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:21:03,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:21:03,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:21:03,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:21:03,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:21:03,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:21:03,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:21:03,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:21:03,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:21:03,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:21:03,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:21:03,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:21:03,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:21:03,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:21:03,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:21:03,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:21:03,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:21:03,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:21:03,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:21:03,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:21:03,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:21:03,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:21:03,882 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:21:03,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:21:03,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:21:03,884 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:21:03,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:21:03,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:21:03,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:21:03,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:21:03,886 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:21:03,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:21:03,887 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:21:03,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:21:03,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:21:03,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:21:03,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:21:03,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:21:03,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:21:03,889 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:21:03,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:21:03,889 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:21:03,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:21:03,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:21:03,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:21:03,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:21:03,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:21:03,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:21:03,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:21:03,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:21:03,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:21:03,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:21:03,891 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:21:03,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:21:03,892 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:21:03,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:21:03,892 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:21:03,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:21:04,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:21:04,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:21:04,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:21:04,192 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:21:04,193 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:21:04,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.i [2023-08-30 23:21:05,252 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:21:05,482 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:21:05,482 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.i [2023-08-30 23:21:05,492 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/744caa035/ee893937c005457180e6abf02b11b4c7/FLAGe44e9e8bf [2023-08-30 23:21:05,840 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/744caa035/ee893937c005457180e6abf02b11b4c7 [2023-08-30 23:21:05,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:21:05,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:21:05,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:21:05,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:21:05,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:21:05,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:21:05" (1/1) ... [2023-08-30 23:21:05,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e55597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:05, skipping insertion in model container [2023-08-30 23:21:05,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:21:05" (1/1) ... [2023-08-30 23:21:05,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:21:05,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:21:06,088 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/safe021_tso.i[945,958] [2023-08-30 23:21:06,264 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:21:06,275 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:21:06,290 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/safe021_tso.i[945,958] [2023-08-30 23:21:06,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:21:06,382 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:21:06,383 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:21:06,389 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:21:06,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:06 WrapperNode [2023-08-30 23:21:06,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:21:06,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:21:06,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:21:06,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:21:06,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:06" (1/1) ... [2023-08-30 23:21:06,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:06" (1/1) ... [2023-08-30 23:21:06,448 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-30 23:21:06,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:21:06,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:21:06,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:21:06,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:21:06,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:06" (1/1) ... [2023-08-30 23:21:06,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:06" (1/1) ... [2023-08-30 23:21:06,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:06" (1/1) ... [2023-08-30 23:21:06,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:06" (1/1) ... [2023-08-30 23:21:06,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:06" (1/1) ... [2023-08-30 23:21:06,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:06" (1/1) ... [2023-08-30 23:21:06,493 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:06" (1/1) ... [2023-08-30 23:21:06,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:06" (1/1) ... [2023-08-30 23:21:06,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:21:06,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:21:06,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:21:06,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:21:06,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:06" (1/1) ... [2023-08-30 23:21:06,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:21:06,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:21:06,538 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 23:21:06,569 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 23:21:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:21:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:21:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:21:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:21:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:21:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 23:21:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 23:21:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 23:21:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 23:21:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 23:21:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 23:21:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:21:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:21:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:21:06,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:21:06,587 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 23:21:06,759 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:21:06,772 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:21:06,975 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:21:06,983 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:21:06,983 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 23:21:06,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:21:06 BoogieIcfgContainer [2023-08-30 23:21:06,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:21:06,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:21:06,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:21:06,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:21:06,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:21:05" (1/3) ... [2023-08-30 23:21:06,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f025656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:21:06, skipping insertion in model container [2023-08-30 23:21:06,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:06" (2/3) ... [2023-08-30 23:21:06,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f025656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:21:06, skipping insertion in model container [2023-08-30 23:21:06,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:21:06" (3/3) ... [2023-08-30 23:21:06,994 INFO L112 eAbstractionObserver]: Analyzing ICFG safe021_tso.i [2023-08-30 23:21:07,001 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:21:07,009 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:21:07,009 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 23:21:07,009 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:21:07,084 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 23:21:07,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-08-30 23:21:07,196 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2023-08-30 23:21:07,197 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:21:07,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-30 23:21:07,201 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-08-30 23:21:07,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-08-30 23:21:07,211 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:21:07,221 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-30 23:21:07,225 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-30 23:21:07,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-08-30 23:21:07,250 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2023-08-30 23:21:07,250 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:21:07,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-30 23:21:07,253 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-30 23:21:09,216 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-08-30 23:21:09,216 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-08-30 23:21:09,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:21:09,233 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;@23b188b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:21:09,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 23:21:09,238 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-30 23:21:09,238 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:21:09,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:21:09,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:09,239 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 23:21:09,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:21:09,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1968690569, now seen corresponding path program 1 times [2023-08-30 23:21:09,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:21:09,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935770988] [2023-08-30 23:21:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:21:09,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:21:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:21:09,778 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 23:21:09,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:21:09,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935770988] [2023-08-30 23:21:09,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935770988] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:21:09,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:21:09,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:21:09,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5918820] [2023-08-30 23:21:09,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:21:09,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:21:09,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:21:09,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:21:09,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:21:09,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-08-30 23:21:09,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 23:21:09,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:21:09,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-08-30 23:21:09,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:21:09,938 INFO L130 PetriNetUnfolder]: 381/644 cut-off events. [2023-08-30 23:21:09,939 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 23:21:09,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1319 conditions, 644 events. 381/644 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2950 event pairs, 117 based on Foata normal form. 26/670 useless extension candidates. Maximal degree in co-relation 1308. Up to 439 conditions per place. [2023-08-30 23:21:09,969 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 22 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2023-08-30 23:21:09,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 122 flow [2023-08-30 23:21:09,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:21:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:21:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-30 23:21:09,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5768321513002365 [2023-08-30 23:21:09,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-30 23:21:09,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-30 23:21:09,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:21:09,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-30 23:21:09,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 23:21:09,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 23:21:09,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 23:21:09,993 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 244 transitions. [2023-08-30 23:21:09,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 122 flow [2023-08-30 23:21:09,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 23:21:09,997 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 78 flow [2023-08-30 23:21:09,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, 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=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-08-30 23:21:10,001 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-30 23:21:10,001 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 78 flow [2023-08-30 23:21:10,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 23:21:10,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:21:10,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:10,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:21:10,003 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 23:21:10,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:21:10,003 INFO L85 PathProgramCache]: Analyzing trace with hash 899864850, now seen corresponding path program 1 times [2023-08-30 23:21:10,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:21:10,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130296565] [2023-08-30 23:21:10,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:21:10,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:21:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:21:10,278 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 23:21:10,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:21:10,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130296565] [2023-08-30 23:21:10,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130296565] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:21:10,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:21:10,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:21:10,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636585170] [2023-08-30 23:21:10,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:21:10,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:21:10,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:21:10,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:21:10,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:21:10,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-08-30 23:21:10,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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 23:21:10,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:21:10,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-08-30 23:21:10,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:21:10,384 INFO L130 PetriNetUnfolder]: 359/600 cut-off events. [2023-08-30 23:21:10,384 INFO L131 PetriNetUnfolder]: For 227/227 co-relation queries the response was YES. [2023-08-30 23:21:10,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 600 events. 359/600 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2647 event pairs, 99 based on Foata normal form. 8/603 useless extension candidates. Maximal degree in co-relation 1566. Up to 339 conditions per place. [2023-08-30 23:21:10,389 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 24 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-08-30 23:21:10,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 166 flow [2023-08-30 23:21:10,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:21:10,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:21:10,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2023-08-30 23:21:10,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5620567375886525 [2023-08-30 23:21:10,392 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 317 transitions. [2023-08-30 23:21:10,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 317 transitions. [2023-08-30 23:21:10,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:21:10,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 317 transitions. [2023-08-30 23:21:10,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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 23:21:10,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 23:21:10,396 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 23:21:10,396 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 78 flow. Second operand 4 states and 317 transitions. [2023-08-30 23:21:10,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 166 flow [2023-08-30 23:21:10,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:21:10,399 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 106 flow [2023-08-30 23:21:10,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-08-30 23:21:10,400 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-30 23:21:10,400 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 106 flow [2023-08-30 23:21:10,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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 23:21:10,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:21:10,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:10,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:21:10,401 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 23:21:10,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:21:10,402 INFO L85 PathProgramCache]: Analyzing trace with hash 899864199, now seen corresponding path program 1 times [2023-08-30 23:21:10,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:21:10,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618157234] [2023-08-30 23:21:10,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:21:10,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:21:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:21:10,525 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 23:21:10,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:21:10,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618157234] [2023-08-30 23:21:10,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618157234] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:21:10,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:21:10,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:21:10,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686111756] [2023-08-30 23:21:10,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:21:10,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:21:10,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:21:10,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:21:10,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:21:10,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-08-30 23:21:10,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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 23:21:10,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:21:10,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-08-30 23:21:10,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:21:10,613 INFO L130 PetriNetUnfolder]: 336/575 cut-off events. [2023-08-30 23:21:10,614 INFO L131 PetriNetUnfolder]: For 418/418 co-relation queries the response was YES. [2023-08-30 23:21:10,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1615 conditions, 575 events. 336/575 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2623 event pairs, 73 based on Foata normal form. 6/581 useless extension candidates. Maximal degree in co-relation 1600. Up to 360 conditions per place. [2023-08-30 23:21:10,618 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 29 selfloop transitions, 11 changer transitions 0/41 dead transitions. [2023-08-30 23:21:10,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 248 flow [2023-08-30 23:21:10,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:21:10,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:21:10,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2023-08-30 23:21:10,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5762411347517731 [2023-08-30 23:21:10,620 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 325 transitions. [2023-08-30 23:21:10,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 325 transitions. [2023-08-30 23:21:10,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:21:10,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 325 transitions. [2023-08-30 23:21:10,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 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 23:21:10,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 23:21:10,624 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 23:21:10,624 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 106 flow. Second operand 4 states and 325 transitions. [2023-08-30 23:21:10,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 248 flow [2023-08-30 23:21:10,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:21:10,627 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 169 flow [2023-08-30 23:21:10,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-08-30 23:21:10,628 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-08-30 23:21:10,628 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 169 flow [2023-08-30 23:21:10,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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 23:21:10,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:21:10,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:10,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:21:10,629 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 23:21:10,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:21:10,630 INFO L85 PathProgramCache]: Analyzing trace with hash 2126005278, now seen corresponding path program 1 times [2023-08-30 23:21:10,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:21:10,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880921170] [2023-08-30 23:21:10,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:21:10,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:21:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:21:10,762 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 23:21:10,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:21:10,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880921170] [2023-08-30 23:21:10,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880921170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:21:10,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:21:10,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:21:10,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301912647] [2023-08-30 23:21:10,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:21:10,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:21:10,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:21:10,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:21:10,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:21:10,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 23:21:10,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 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 23:21:10,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:21:10,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 23:21:10,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:21:10,905 INFO L130 PetriNetUnfolder]: 525/848 cut-off events. [2023-08-30 23:21:10,905 INFO L131 PetriNetUnfolder]: For 1248/1248 co-relation queries the response was YES. [2023-08-30 23:21:10,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2636 conditions, 848 events. 525/848 cut-off events. For 1248/1248 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3599 event pairs, 67 based on Foata normal form. 14/862 useless extension candidates. Maximal degree in co-relation 2618. Up to 329 conditions per place. [2023-08-30 23:21:10,911 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 42 selfloop transitions, 19 changer transitions 0/61 dead transitions. [2023-08-30 23:21:10,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 61 transitions, 452 flow [2023-08-30 23:21:10,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:21:10,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:21:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2023-08-30 23:21:10,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2023-08-30 23:21:10,913 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2023-08-30 23:21:10,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2023-08-30 23:21:10,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:21:10,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2023-08-30 23:21:10,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 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 23:21:10,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 23:21:10,917 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 23:21:10,917 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 169 flow. Second operand 5 states and 400 transitions. [2023-08-30 23:21:10,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 61 transitions, 452 flow [2023-08-30 23:21:10,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 450 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 23:21:10,923 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 359 flow [2023-08-30 23:21:10,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=359, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-08-30 23:21:10,924 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-08-30 23:21:10,924 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 359 flow [2023-08-30 23:21:10,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 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 23:21:10,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:21:10,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:10,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:21:10,925 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 23:21:10,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:21:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2125985748, now seen corresponding path program 2 times [2023-08-30 23:21:10,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:21:10,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620078810] [2023-08-30 23:21:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:21:10,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:21:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:21:11,046 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 23:21:11,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:21:11,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620078810] [2023-08-30 23:21:11,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620078810] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:21:11,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:21:11,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:21:11,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843221746] [2023-08-30 23:21:11,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:21:11,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:21:11,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:21:11,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:21:11,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:21:11,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 23:21:11,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 359 flow. Second operand has 5 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 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 23:21:11,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:21:11,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 23:21:11,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:21:11,179 INFO L130 PetriNetUnfolder]: 577/950 cut-off events. [2023-08-30 23:21:11,179 INFO L131 PetriNetUnfolder]: For 3196/3196 co-relation queries the response was YES. [2023-08-30 23:21:11,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3522 conditions, 950 events. 577/950 cut-off events. For 3196/3196 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4209 event pairs, 141 based on Foata normal form. 40/990 useless extension candidates. Maximal degree in co-relation 3498. Up to 372 conditions per place. [2023-08-30 23:21:11,184 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 30 selfloop transitions, 7 changer transitions 22/59 dead transitions. [2023-08-30 23:21:11,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 570 flow [2023-08-30 23:21:11,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:21:11,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:21:11,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2023-08-30 23:21:11,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2023-08-30 23:21:11,186 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2023-08-30 23:21:11,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2023-08-30 23:21:11,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:21:11,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2023-08-30 23:21:11,188 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 23:21:11,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 23:21:11,190 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 23:21:11,190 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 359 flow. Second operand 5 states and 390 transitions. [2023-08-30 23:21:11,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 570 flow [2023-08-30 23:21:11,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 59 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 23:21:11,200 INFO L231 Difference]: Finished difference. Result has 50 places, 24 transitions, 208 flow [2023-08-30 23:21:11,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=50, PETRI_TRANSITIONS=24} [2023-08-30 23:21:11,201 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-08-30 23:21:11,201 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 24 transitions, 208 flow [2023-08-30 23:21:11,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 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 23:21:11,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:21:11,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:11,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:21:11,202 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 23:21:11,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:21:11,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1996464414, now seen corresponding path program 1 times [2023-08-30 23:21:11,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:21:11,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934547555] [2023-08-30 23:21:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:21:11,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:21:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:21:11,317 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 23:21:11,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:21:11,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934547555] [2023-08-30 23:21:11,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934547555] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:21:11,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:21:11,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:21:11,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876045559] [2023-08-30 23:21:11,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:21:11,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:21:11,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:21:11,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:21:11,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:21:11,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-08-30 23:21:11,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 24 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 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 23:21:11,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:21:11,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-08-30 23:21:11,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:21:11,406 INFO L130 PetriNetUnfolder]: 173/350 cut-off events. [2023-08-30 23:21:11,406 INFO L131 PetriNetUnfolder]: For 1909/1978 co-relation queries the response was YES. [2023-08-30 23:21:11,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 350 events. 173/350 cut-off events. For 1909/1978 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1634 event pairs, 45 based on Foata normal form. 27/364 useless extension candidates. Maximal degree in co-relation 1279. Up to 211 conditions per place. [2023-08-30 23:21:11,409 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 30 selfloop transitions, 7 changer transitions 6/51 dead transitions. [2023-08-30 23:21:11,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 469 flow [2023-08-30 23:21:11,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:21:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:21:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 409 transitions. [2023-08-30 23:21:11,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5801418439716312 [2023-08-30 23:21:11,411 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 409 transitions. [2023-08-30 23:21:11,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 409 transitions. [2023-08-30 23:21:11,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:21:11,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 409 transitions. [2023-08-30 23:21:11,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 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 23:21:11,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 23:21:11,414 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 23:21:11,414 INFO L175 Difference]: Start difference. First operand has 50 places, 24 transitions, 208 flow. Second operand 5 states and 409 transitions. [2023-08-30 23:21:11,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 469 flow [2023-08-30 23:21:11,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 323 flow, removed 17 selfloop flow, removed 14 redundant places. [2023-08-30 23:21:11,418 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 175 flow [2023-08-30 23:21:11,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2023-08-30 23:21:11,419 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-08-30 23:21:11,419 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 175 flow [2023-08-30 23:21:11,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 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 23:21:11,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:21:11,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:11,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 23:21:11,420 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 23:21:11,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:21:11,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1812874730, now seen corresponding path program 1 times [2023-08-30 23:21:11,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:21:11,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286413443] [2023-08-30 23:21:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:21:11,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:21:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:21:11,556 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 23:21:11,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:21:11,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286413443] [2023-08-30 23:21:11,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286413443] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:21:11,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:21:11,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:21:11,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296494855] [2023-08-30 23:21:11,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:21:11,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:21:11,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:21:11,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:21:11,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:21:11,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-08-30 23:21:11,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 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 23:21:11,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:21:11,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-08-30 23:21:11,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:21:11,668 INFO L130 PetriNetUnfolder]: 145/315 cut-off events. [2023-08-30 23:21:11,668 INFO L131 PetriNetUnfolder]: For 671/766 co-relation queries the response was YES. [2023-08-30 23:21:11,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 315 events. 145/315 cut-off events. For 671/766 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1497 event pairs, 18 based on Foata normal form. 62/368 useless extension candidates. Maximal degree in co-relation 1177. Up to 160 conditions per place. [2023-08-30 23:21:11,670 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 33 selfloop transitions, 13 changer transitions 11/65 dead transitions. [2023-08-30 23:21:11,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 489 flow [2023-08-30 23:21:11,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:21:11,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:21:11,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 569 transitions. [2023-08-30 23:21:11,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5764944275582573 [2023-08-30 23:21:11,673 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 569 transitions. [2023-08-30 23:21:11,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 569 transitions. [2023-08-30 23:21:11,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:21:11,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 569 transitions. [2023-08-30 23:21:11,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.28571428571429) internal successors, (569), 7 states have internal predecessors, (569), 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 23:21:11,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 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 23:21:11,677 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 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 23:21:11,677 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 175 flow. Second operand 7 states and 569 transitions. [2023-08-30 23:21:11,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 489 flow [2023-08-30 23:21:11,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:21:11,680 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 259 flow [2023-08-30 23:21:11,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=259, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2023-08-30 23:21:11,680 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2023-08-30 23:21:11,681 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 259 flow [2023-08-30 23:21:11,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 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 23:21:11,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:21:11,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:11,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 23:21:11,681 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 23:21:11,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:21:11,682 INFO L85 PathProgramCache]: Analyzing trace with hash 728392813, now seen corresponding path program 1 times [2023-08-30 23:21:11,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:21:11,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091432587] [2023-08-30 23:21:11,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:21:11,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:21:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:21:11,850 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 23:21:11,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:21:11,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091432587] [2023-08-30 23:21:11,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091432587] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:21:11,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:21:11,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:21:11,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844306409] [2023-08-30 23:21:11,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:21:11,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:21:11,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:21:11,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:21:11,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:21:11,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-08-30 23:21:11,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 259 flow. Second operand has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 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 23:21:11,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:21:11,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-08-30 23:21:11,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:21:11,970 INFO L130 PetriNetUnfolder]: 124/283 cut-off events. [2023-08-30 23:21:11,970 INFO L131 PetriNetUnfolder]: For 1016/1133 co-relation queries the response was YES. [2023-08-30 23:21:11,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 283 events. 124/283 cut-off events. For 1016/1133 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1348 event pairs, 14 based on Foata normal form. 68/343 useless extension candidates. Maximal degree in co-relation 1239. Up to 138 conditions per place. [2023-08-30 23:21:11,973 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 29 selfloop transitions, 17 changer transitions 11/65 dead transitions. [2023-08-30 23:21:11,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 65 transitions, 547 flow [2023-08-30 23:21:11,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:21:11,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:21:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 717 transitions. [2023-08-30 23:21:11,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2023-08-30 23:21:11,975 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 717 transitions. [2023-08-30 23:21:11,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 717 transitions. [2023-08-30 23:21:11,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:21:11,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 717 transitions. [2023-08-30 23:21:11,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 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 23:21:11,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 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 23:21:11,980 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 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 23:21:11,980 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 259 flow. Second operand 9 states and 717 transitions. [2023-08-30 23:21:11,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 65 transitions, 547 flow [2023-08-30 23:21:11,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 517 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-30 23:21:11,984 INFO L231 Difference]: Finished difference. Result has 60 places, 37 transitions, 285 flow [2023-08-30 23:21:11,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=285, PETRI_PLACES=60, PETRI_TRANSITIONS=37} [2023-08-30 23:21:11,985 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 33 predicate places. [2023-08-30 23:21:11,985 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 37 transitions, 285 flow [2023-08-30 23:21:11,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 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 23:21:11,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:21:11,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:11,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 23:21:11,986 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:21:11,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:21:11,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1287629806, now seen corresponding path program 1 times [2023-08-30 23:21:11,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:21:11,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138349748] [2023-08-30 23:21:11,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:21:11,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:21:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:21:12,119 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 23:21:12,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:21:12,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138349748] [2023-08-30 23:21:12,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138349748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:21:12,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:21:12,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:21:12,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709979532] [2023-08-30 23:21:12,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:21:12,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:21:12,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:21:12,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:21:12,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:21:12,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 23:21:12,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 37 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 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 23:21:12,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:21:12,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 23:21:12,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:21:12,215 INFO L130 PetriNetUnfolder]: 202/420 cut-off events. [2023-08-30 23:21:12,216 INFO L131 PetriNetUnfolder]: For 1487/1487 co-relation queries the response was YES. [2023-08-30 23:21:12,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1906 conditions, 420 events. 202/420 cut-off events. For 1487/1487 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1949 event pairs, 25 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 1889. Up to 220 conditions per place. [2023-08-30 23:21:12,218 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2023-08-30 23:21:12,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 72 transitions, 657 flow [2023-08-30 23:21:12,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:21:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:21:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2023-08-30 23:21:12,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517730496453901 [2023-08-30 23:21:12,220 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 389 transitions. [2023-08-30 23:21:12,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 389 transitions. [2023-08-30 23:21:12,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:21:12,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 389 transitions. [2023-08-30 23:21:12,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 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 23:21:12,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 23:21:12,223 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 23:21:12,223 INFO L175 Difference]: Start difference. First operand has 60 places, 37 transitions, 285 flow. Second operand 5 states and 389 transitions. [2023-08-30 23:21:12,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 72 transitions, 657 flow [2023-08-30 23:21:12,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 72 transitions, 514 flow, removed 16 selfloop flow, removed 12 redundant places. [2023-08-30 23:21:12,228 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-08-30 23:21:12,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-08-30 23:21:12,229 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-08-30 23:21:12,229 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-08-30 23:21:12,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 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 23:21:12,234 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 23:21:12,235 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-30 23:21:12,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 23:21:12,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 23:21:12,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 23:21:12,236 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:12,239 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:21:12,239 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:21:12,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:21:12 BasicIcfg [2023-08-30 23:21:12,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:21:12,243 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:21:12,244 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:21:12,244 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:21:12,244 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:21:06" (3/4) ... [2023-08-30 23:21:12,246 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 23:21:12,251 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 23:21:12,251 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 23:21:12,251 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-30 23:21:12,256 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-30 23:21:12,256 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 23:21:12,257 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 23:21:12,257 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 23:21:12,289 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:21:12,289 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:21:12,290 INFO L158 Benchmark]: Toolchain (without parser) took 6428.30ms. Allocated memory was 86.0MB in the beginning and 130.0MB in the end (delta: 44.0MB). Free memory was 59.4MB in the beginning and 67.4MB in the end (delta: -7.9MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2023-08-30 23:21:12,290 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory was 36.7MB in the beginning and 36.6MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:21:12,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 526.93ms. Allocated memory is still 86.0MB. Free memory was 59.2MB in the beginning and 59.7MB in the end (delta: -445.5kB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2023-08-30 23:21:12,290 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.44ms. Allocated memory is still 86.0MB. Free memory was 59.7MB in the beginning and 57.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:21:12,291 INFO L158 Benchmark]: Boogie Preprocessor took 51.93ms. Allocated memory is still 86.0MB. Free memory was 57.6MB in the beginning and 56.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:21:12,291 INFO L158 Benchmark]: RCFGBuilder took 484.07ms. Allocated memory is still 86.0MB. Free memory was 56.3MB in the beginning and 42.6MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 23:21:12,291 INFO L158 Benchmark]: TraceAbstraction took 5254.55ms. Allocated memory was 86.0MB in the beginning and 130.0MB in the end (delta: 44.0MB). Free memory was 41.9MB in the beginning and 69.5MB in the end (delta: -27.5MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2023-08-30 23:21:12,292 INFO L158 Benchmark]: Witness Printer took 45.79ms. Allocated memory is still 130.0MB. Free memory was 69.5MB in the beginning and 67.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:21:12,294 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 58.7MB. Free memory was 36.7MB in the beginning and 36.6MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 526.93ms. Allocated memory is still 86.0MB. Free memory was 59.2MB in the beginning and 59.7MB in the end (delta: -445.5kB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.44ms. Allocated memory is still 86.0MB. Free memory was 59.7MB in the beginning and 57.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.93ms. Allocated memory is still 86.0MB. Free memory was 57.6MB in the beginning and 56.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 484.07ms. Allocated memory is still 86.0MB. Free memory was 56.3MB in the beginning and 42.6MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5254.55ms. Allocated memory was 86.0MB in the beginning and 130.0MB in the end (delta: 44.0MB). Free memory was 41.9MB in the beginning and 69.5MB in the end (delta: -27.5MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. * Witness Printer took 45.79ms. Allocated memory is still 130.0MB. Free memory was 69.5MB in the beginning and 67.4MB in the end (delta: 2.1MB). 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: 2.0s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1216, independent: 1139, independent conditional: 0, independent unconditional: 1139, 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: 578, independent: 555, independent conditional: 0, independent unconditional: 555, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1216, independent: 584, independent conditional: 0, independent unconditional: 584, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 578, unknown conditional: 0, unknown unconditional: 578] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 41, Positive conditional cache size: 0, Positive unconditional cache size: 41, 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, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 324 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 247 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 551 IncrementalHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 43 mSDtfsCounter, 551 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=359occurred in iteration=4, InterpolantAutomatonStates: 47, 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, 1.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 407 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 23:21:12,324 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