./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/safe001_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 d13e05ad1104a4a5317ff09857a34619cbd86966f0892caf9775309ccc15230d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:54:34,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:54:34,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:54:34,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:54:34,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:54:34,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:54:34,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:54:34,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:54:34,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:54:34,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:54:34,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:54:34,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:54:34,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:54:34,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:54:34,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:54:34,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:54:34,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:54:34,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:54:34,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:54:34,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:54:34,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:54:34,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:54:34,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:54:34,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:54:34,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:54:34,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:54:34,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:54:34,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:54:34,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:54:34,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:54:34,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:54:34,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:54:34,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:54:34,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:54:34,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:54:34,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:54:34,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:54:34,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:54:34,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:54:34,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:54:34,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:54:34,912 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:54:34,945 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:54:34,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:54:34,947 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:54:34,947 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:54:34,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:54:34,948 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:54:34,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:54:34,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:54:34,949 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:54:34,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:54:34,950 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:54:34,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:54:34,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:54:34,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:54:34,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:54:34,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:54:34,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:54:34,951 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:54:34,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:54:34,952 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:54:34,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:54:34,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:54:34,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:54:34,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:54:34,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:54:34,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:54:34,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:54:34,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:54:34,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:54:34,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:54:34,954 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:54:34,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:54:34,955 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:54:34,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:54:34,955 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:54:34,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d13e05ad1104a4a5317ff09857a34619cbd86966f0892caf9775309ccc15230d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:54:35,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:54:35,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:54:35,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:54:35,313 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:54:35,313 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:54:35,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.i [2023-08-30 16:54:36,561 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:54:36,863 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:54:36,864 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.i [2023-08-30 16:54:36,875 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da2cdefa/c73cfd6399fd49de968656d39dd8421a/FLAGce3fd36e1 [2023-08-30 16:54:36,893 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da2cdefa/c73cfd6399fd49de968656d39dd8421a [2023-08-30 16:54:36,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:54:36,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:54:36,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:54:36,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:54:36,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:54:36,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:54:36" (1/1) ... [2023-08-30 16:54:36,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a4e645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:36, skipping insertion in model container [2023-08-30 16:54:36,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:54:36" (1/1) ... [2023-08-30 16:54:36,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:54:36,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:54:37,078 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/safe001_tso.i[945,958] [2023-08-30 16:54:37,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:54:37,250 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:54:37,259 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/safe001_tso.i[945,958] [2023-08-30 16:54:37,291 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:54:37,325 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:54:37,325 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:54:37,332 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:54:37,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:37 WrapperNode [2023-08-30 16:54:37,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:54:37,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:54:37,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:54:37,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:54:37,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:37" (1/1) ... [2023-08-30 16:54:37,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:37" (1/1) ... [2023-08-30 16:54:37,373 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-08-30 16:54:37,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:54:37,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:54:37,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:54:37,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:54:37,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:37" (1/1) ... [2023-08-30 16:54:37,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:37" (1/1) ... [2023-08-30 16:54:37,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:37" (1/1) ... [2023-08-30 16:54:37,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:37" (1/1) ... [2023-08-30 16:54:37,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:37" (1/1) ... [2023-08-30 16:54:37,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:37" (1/1) ... [2023-08-30 16:54:37,391 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:37" (1/1) ... [2023-08-30 16:54:37,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:37" (1/1) ... [2023-08-30 16:54:37,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:54:37,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:54:37,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:54:37,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:54:37,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:37" (1/1) ... [2023-08-30 16:54:37,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:54:37,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:54:37,444 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 16:54:37,465 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 16:54:37,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:54:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:54:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:54:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:54:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:54:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 16:54:37,480 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 16:54:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 16:54:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 16:54:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 16:54:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 16:54:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:54:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:54:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:54:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:54:37,483 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 16:54:37,596 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:54:37,598 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:54:37,813 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:54:37,820 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:54:37,820 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:54:37,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:54:37 BoogieIcfgContainer [2023-08-30 16:54:37,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:54:37,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:54:37,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:54:37,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:54:37,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:54:36" (1/3) ... [2023-08-30 16:54:37,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ccef4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:54:37, skipping insertion in model container [2023-08-30 16:54:37,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:37" (2/3) ... [2023-08-30 16:54:37,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ccef4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:54:37, skipping insertion in model container [2023-08-30 16:54:37,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:54:37" (3/3) ... [2023-08-30 16:54:37,829 INFO L112 eAbstractionObserver]: Analyzing ICFG safe001_tso.i [2023-08-30 16:54:37,838 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:54:37,847 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:54:37,848 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 16:54:37,848 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:54:37,900 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 16:54:37,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-08-30 16:54:37,972 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2023-08-30 16:54:37,973 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:54:37,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-30 16:54:37,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-08-30 16:54:37,981 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-08-30 16:54:37,984 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:54:37,992 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-30 16:54:37,995 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-30 16:54:37,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-08-30 16:54:38,016 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2023-08-30 16:54:38,017 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:54:38,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-30 16:54:38,019 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-30 16:54:39,757 INFO L134 LiptonReduction]: Checked pairs total: 1941 [2023-08-30 16:54:39,758 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-08-30 16:54:39,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:54:39,792 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;@987e7f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:54:39,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 16:54:39,814 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-30 16:54:39,816 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:54:39,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:39,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:39,817 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 16:54:39,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:39,823 INFO L85 PathProgramCache]: Analyzing trace with hash -856354579, now seen corresponding path program 1 times [2023-08-30 16:54:39,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:39,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919058295] [2023-08-30 16:54:39,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:39,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:40,396 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 16:54:40,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:40,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919058295] [2023-08-30 16:54:40,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919058295] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:40,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:40,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:54:40,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835656004] [2023-08-30 16:54:40,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:40,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:54:40,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:40,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:54:40,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:54:40,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-08-30 16:54:40,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 16:54:40,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:40,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-08-30 16:54:40,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:40,579 INFO L130 PetriNetUnfolder]: 562/906 cut-off events. [2023-08-30 16:54:40,579 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-30 16:54:40,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1867 conditions, 906 events. 562/906 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3929 event pairs, 240 based on Foata normal form. 53/959 useless extension candidates. Maximal degree in co-relation 1856. Up to 478 conditions per place. [2023-08-30 16:54:40,587 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-08-30 16:54:40,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-08-30 16:54:40,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:54:40,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:54:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-08-30 16:54:40,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565947242206235 [2023-08-30 16:54:40,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-08-30 16:54:40,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-08-30 16:54:40,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:40,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-08-30 16:54:40,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 16:54:40,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:40,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:40,618 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 236 transitions. [2023-08-30 16:54:40,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-08-30 16:54:40,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 16:54:40,622 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 94 flow [2023-08-30 16:54:40,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-08-30 16:54:40,628 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-30 16:54:40,629 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2023-08-30 16:54:40,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 16:54:40,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:40,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:40,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:54:40,634 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 16:54:40,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:40,635 INFO L85 PathProgramCache]: Analyzing trace with hash -777188759, now seen corresponding path program 1 times [2023-08-30 16:54:40,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:40,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347734167] [2023-08-30 16:54:40,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:40,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:40,855 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 16:54:40,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:40,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347734167] [2023-08-30 16:54:40,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347734167] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:40,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:40,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:54:40,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425878348] [2023-08-30 16:54:40,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:40,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:54:40,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:40,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:54:40,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:54:40,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-08-30 16:54:40,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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 16:54:40,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:40,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-08-30 16:54:40,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:41,019 INFO L130 PetriNetUnfolder]: 534/863 cut-off events. [2023-08-30 16:54:41,019 INFO L131 PetriNetUnfolder]: For 335/335 co-relation queries the response was YES. [2023-08-30 16:54:41,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2483 conditions, 863 events. 534/863 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3789 event pairs, 69 based on Foata normal form. 6/869 useless extension candidates. Maximal degree in co-relation 2471. Up to 451 conditions per place. [2023-08-30 16:54:41,027 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-08-30 16:54:41,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 264 flow [2023-08-30 16:54:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:54:41,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:54:41,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2023-08-30 16:54:41,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5629496402877698 [2023-08-30 16:54:41,032 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2023-08-30 16:54:41,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2023-08-30 16:54:41,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:41,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2023-08-30 16:54:41,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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 16:54:41,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:41,038 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:41,038 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 313 transitions. [2023-08-30 16:54:41,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 264 flow [2023-08-30 16:54:41,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 45 transitions, 240 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:54:41,044 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 164 flow [2023-08-30 16:54:41,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2023-08-30 16:54:41,046 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-30 16:54:41,046 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 164 flow [2023-08-30 16:54:41,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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 16:54:41,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:41,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:41,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:54:41,047 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 16:54:41,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:41,050 INFO L85 PathProgramCache]: Analyzing trace with hash -777188790, now seen corresponding path program 1 times [2023-08-30 16:54:41,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:41,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076100623] [2023-08-30 16:54:41,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:41,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:41,239 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 16:54:41,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:41,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076100623] [2023-08-30 16:54:41,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076100623] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:41,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:41,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:54:41,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934294555] [2023-08-30 16:54:41,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:41,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:54:41,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:41,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:54:41,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:54:41,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-08-30 16:54:41,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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 16:54:41,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:41,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-08-30 16:54:41,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:41,386 INFO L130 PetriNetUnfolder]: 493/802 cut-off events. [2023-08-30 16:54:41,386 INFO L131 PetriNetUnfolder]: For 830/830 co-relation queries the response was YES. [2023-08-30 16:54:41,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2591 conditions, 802 events. 493/802 cut-off events. For 830/830 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3335 event pairs, 77 based on Foata normal form. 8/810 useless extension candidates. Maximal degree in co-relation 2576. Up to 347 conditions per place. [2023-08-30 16:54:41,392 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 40 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2023-08-30 16:54:41,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 53 transitions, 380 flow [2023-08-30 16:54:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:54:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:54:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2023-08-30 16:54:41,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611510791366906 [2023-08-30 16:54:41,395 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 312 transitions. [2023-08-30 16:54:41,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 312 transitions. [2023-08-30 16:54:41,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:41,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 312 transitions. [2023-08-30 16:54:41,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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 16:54:41,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:41,398 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:41,398 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 164 flow. Second operand 4 states and 312 transitions. [2023-08-30 16:54:41,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 53 transitions, 380 flow [2023-08-30 16:54:41,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 380 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:54:41,402 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 296 flow [2023-08-30 16:54:41,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2023-08-30 16:54:41,403 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-08-30 16:54:41,403 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 296 flow [2023-08-30 16:54:41,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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 16:54:41,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:41,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:41,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:54:41,404 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 16:54:41,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:41,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1314233776, now seen corresponding path program 1 times [2023-08-30 16:54:41,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:41,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987336923] [2023-08-30 16:54:41,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:41,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:41,520 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 16:54:41,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:41,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987336923] [2023-08-30 16:54:41,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987336923] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:41,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:41,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:54:41,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390449895] [2023-08-30 16:54:41,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:41,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:54:41,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:41,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:54:41,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:54:41,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-08-30 16:54:41,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 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 16:54:41,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:41,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-08-30 16:54:41,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:41,649 INFO L130 PetriNetUnfolder]: 508/839 cut-off events. [2023-08-30 16:54:41,650 INFO L131 PetriNetUnfolder]: For 1835/1835 co-relation queries the response was YES. [2023-08-30 16:54:41,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3108 conditions, 839 events. 508/839 cut-off events. For 1835/1835 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3664 event pairs, 72 based on Foata normal form. 8/847 useless extension candidates. Maximal degree in co-relation 3088. Up to 342 conditions per place. [2023-08-30 16:54:41,655 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 36 selfloop transitions, 20 changer transitions 0/56 dead transitions. [2023-08-30 16:54:41,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 464 flow [2023-08-30 16:54:41,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:54:41,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:54:41,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2023-08-30 16:54:41,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564748201438849 [2023-08-30 16:54:41,657 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 314 transitions. [2023-08-30 16:54:41,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 314 transitions. [2023-08-30 16:54:41,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:41,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 314 transitions. [2023-08-30 16:54:41,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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 16:54:41,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:41,660 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:41,660 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 296 flow. Second operand 4 states and 314 transitions. [2023-08-30 16:54:41,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 56 transitions, 464 flow [2023-08-30 16:54:41,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 56 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:54:41,668 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 376 flow [2023-08-30 16:54:41,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-08-30 16:54:41,669 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-08-30 16:54:41,669 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 376 flow [2023-08-30 16:54:41,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 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 16:54:41,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:41,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:41,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:54:41,670 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 16:54:41,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:41,670 INFO L85 PathProgramCache]: Analyzing trace with hash 445206083, now seen corresponding path program 1 times [2023-08-30 16:54:41,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:41,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497623359] [2023-08-30 16:54:41,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:41,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:41,809 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 16:54:41,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:41,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497623359] [2023-08-30 16:54:41,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497623359] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:41,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:41,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:54:41,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138172150] [2023-08-30 16:54:41,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:41,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:54:41,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:41,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:54:41,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:54:41,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-08-30 16:54:41,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 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 16:54:41,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:41,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-08-30 16:54:41,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:41,955 INFO L130 PetriNetUnfolder]: 554/917 cut-off events. [2023-08-30 16:54:41,956 INFO L131 PetriNetUnfolder]: For 3324/3324 co-relation queries the response was YES. [2023-08-30 16:54:41,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3682 conditions, 917 events. 554/917 cut-off events. For 3324/3324 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4003 event pairs, 136 based on Foata normal form. 28/945 useless extension candidates. Maximal degree in co-relation 3658. Up to 528 conditions per place. [2023-08-30 16:54:41,962 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 34 selfloop transitions, 9 changer transitions 20/63 dead transitions. [2023-08-30 16:54:41,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 627 flow [2023-08-30 16:54:41,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:54:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:54:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2023-08-30 16:54:41,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5496402877697841 [2023-08-30 16:54:41,964 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 382 transitions. [2023-08-30 16:54:41,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 382 transitions. [2023-08-30 16:54:41,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:41,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 382 transitions. [2023-08-30 16:54:41,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 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 16:54:41,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:41,968 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:41,968 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 376 flow. Second operand 5 states and 382 transitions. [2023-08-30 16:54:41,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 627 flow [2023-08-30 16:54:41,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 63 transitions, 623 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-30 16:54:41,977 INFO L231 Difference]: Finished difference. Result has 50 places, 30 transitions, 299 flow [2023-08-30 16:54:41,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=50, PETRI_TRANSITIONS=30} [2023-08-30 16:54:41,979 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-08-30 16:54:41,979 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 30 transitions, 299 flow [2023-08-30 16:54:41,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 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 16:54:41,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:41,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:41,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 16:54:41,980 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 16:54:41,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:41,981 INFO L85 PathProgramCache]: Analyzing trace with hash 405618661, now seen corresponding path program 1 times [2023-08-30 16:54:41,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:41,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722743572] [2023-08-30 16:54:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:41,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:42,111 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 16:54:42,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:42,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722743572] [2023-08-30 16:54:42,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722743572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:42,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:42,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:54:42,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732433203] [2023-08-30 16:54:42,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:42,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:54:42,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:42,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:54:42,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:54:42,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-08-30 16:54:42,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 30 transitions, 299 flow. Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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 16:54:42,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:42,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-08-30 16:54:42,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:42,214 INFO L130 PetriNetUnfolder]: 243/420 cut-off events. [2023-08-30 16:54:42,215 INFO L131 PetriNetUnfolder]: For 1718/1718 co-relation queries the response was YES. [2023-08-30 16:54:42,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1827 conditions, 420 events. 243/420 cut-off events. For 1718/1718 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1496 event pairs, 57 based on Foata normal form. 4/424 useless extension candidates. Maximal degree in co-relation 1798. Up to 206 conditions per place. [2023-08-30 16:54:42,218 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 34 selfloop transitions, 14 changer transitions 0/48 dead transitions. [2023-08-30 16:54:42,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 480 flow [2023-08-30 16:54:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:54:42,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:54:42,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2023-08-30 16:54:42,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564748201438849 [2023-08-30 16:54:42,220 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 314 transitions. [2023-08-30 16:54:42,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 314 transitions. [2023-08-30 16:54:42,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:42,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 314 transitions. [2023-08-30 16:54:42,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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 16:54:42,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:42,222 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:42,222 INFO L175 Difference]: Start difference. First operand has 50 places, 30 transitions, 299 flow. Second operand 4 states and 314 transitions. [2023-08-30 16:54:42,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 480 flow [2023-08-30 16:54:42,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 426 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-30 16:54:42,228 INFO L231 Difference]: Finished difference. Result has 50 places, 32 transitions, 347 flow [2023-08-30 16:54:42,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=347, PETRI_PLACES=50, PETRI_TRANSITIONS=32} [2023-08-30 16:54:42,229 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-08-30 16:54:42,229 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 32 transitions, 347 flow [2023-08-30 16:54:42,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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 16:54:42,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:42,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:42,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 16:54:42,230 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 16:54:42,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:42,230 INFO L85 PathProgramCache]: Analyzing trace with hash -995434081, now seen corresponding path program 1 times [2023-08-30 16:54:42,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:42,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950074334] [2023-08-30 16:54:42,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:42,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:42,336 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 16:54:42,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:42,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950074334] [2023-08-30 16:54:42,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950074334] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:42,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:42,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:54:42,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832397895] [2023-08-30 16:54:42,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:42,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:54:42,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:42,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:54:42,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:54:42,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 139 [2023-08-30 16:54:42,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 32 transitions, 347 flow. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 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 16:54:42,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:42,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 139 [2023-08-30 16:54:42,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:42,443 INFO L130 PetriNetUnfolder]: 273/504 cut-off events. [2023-08-30 16:54:42,443 INFO L131 PetriNetUnfolder]: For 2127/2132 co-relation queries the response was YES. [2023-08-30 16:54:42,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2113 conditions, 504 events. 273/504 cut-off events. For 2127/2132 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2134 event pairs, 85 based on Foata normal form. 16/513 useless extension candidates. Maximal degree in co-relation 2084. Up to 200 conditions per place. [2023-08-30 16:54:42,446 INFO L137 encePairwiseOnDemand]: 135/139 looper letters, 25 selfloop transitions, 5 changer transitions 11/45 dead transitions. [2023-08-30 16:54:42,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 485 flow [2023-08-30 16:54:42,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:54:42,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:54:42,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 322 transitions. [2023-08-30 16:54:42,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.579136690647482 [2023-08-30 16:54:42,448 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 322 transitions. [2023-08-30 16:54:42,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 322 transitions. [2023-08-30 16:54:42,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:42,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 322 transitions. [2023-08-30 16:54:42,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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 16:54:42,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:42,450 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:42,450 INFO L175 Difference]: Start difference. First operand has 50 places, 32 transitions, 347 flow. Second operand 4 states and 322 transitions. [2023-08-30 16:54:42,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 485 flow [2023-08-30 16:54:42,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 465 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:54:42,457 INFO L231 Difference]: Finished difference. Result has 52 places, 25 transitions, 261 flow [2023-08-30 16:54:42,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=52, PETRI_TRANSITIONS=25} [2023-08-30 16:54:42,457 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-08-30 16:54:42,457 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 25 transitions, 261 flow [2023-08-30 16:54:42,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 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 16:54:42,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:42,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:42,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 16:54:42,458 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 16:54:42,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:42,459 INFO L85 PathProgramCache]: Analyzing trace with hash -258315683, now seen corresponding path program 2 times [2023-08-30 16:54:42,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:42,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997831882] [2023-08-30 16:54:42,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:42,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:42,578 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 16:54:42,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:42,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997831882] [2023-08-30 16:54:42,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997831882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:42,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:42,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:54:42,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654088085] [2023-08-30 16:54:42,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:42,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:54:42,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:42,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:54:42,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:54:42,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-08-30 16:54:42,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 25 transitions, 261 flow. Second operand has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 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 16:54:42,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:42,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-08-30 16:54:42,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:42,679 INFO L130 PetriNetUnfolder]: 187/334 cut-off events. [2023-08-30 16:54:42,679 INFO L131 PetriNetUnfolder]: For 1358/1358 co-relation queries the response was YES. [2023-08-30 16:54:42,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 334 events. 187/334 cut-off events. For 1358/1358 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1205 event pairs, 28 based on Foata normal form. 12/346 useless extension candidates. Maximal degree in co-relation 1398. Up to 100 conditions per place. [2023-08-30 16:54:42,681 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 21 selfloop transitions, 5 changer transitions 19/45 dead transitions. [2023-08-30 16:54:42,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 45 transitions, 420 flow [2023-08-30 16:54:42,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 16:54:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 16:54:42,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 449 transitions. [2023-08-30 16:54:42,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5383693045563549 [2023-08-30 16:54:42,682 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 449 transitions. [2023-08-30 16:54:42,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 449 transitions. [2023-08-30 16:54:42,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:42,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 449 transitions. [2023-08-30 16:54:42,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.83333333333333) internal successors, (449), 6 states have internal predecessors, (449), 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 16:54:42,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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 16:54:42,685 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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 16:54:42,686 INFO L175 Difference]: Start difference. First operand has 52 places, 25 transitions, 261 flow. Second operand 6 states and 449 transitions. [2023-08-30 16:54:42,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 45 transitions, 420 flow [2023-08-30 16:54:42,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 338 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-08-30 16:54:42,690 INFO L231 Difference]: Finished difference. Result has 46 places, 17 transitions, 112 flow [2023-08-30 16:54:42,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=46, PETRI_TRANSITIONS=17} [2023-08-30 16:54:42,690 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-08-30 16:54:42,690 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 17 transitions, 112 flow [2023-08-30 16:54:42,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 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 16:54:42,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:42,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:42,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 16:54:42,691 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 16:54:42,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:42,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1061372941, now seen corresponding path program 3 times [2023-08-30 16:54:42,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:42,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194020425] [2023-08-30 16:54:42,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:42,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:42,807 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 16:54:42,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:42,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194020425] [2023-08-30 16:54:42,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194020425] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:42,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:42,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:54:42,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293168203] [2023-08-30 16:54:42,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:42,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:54:42,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:42,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:54:42,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:54:42,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 139 [2023-08-30 16:54:42,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 17 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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 16:54:42,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:42,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 139 [2023-08-30 16:54:42,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:42,869 INFO L130 PetriNetUnfolder]: 46/113 cut-off events. [2023-08-30 16:54:42,869 INFO L131 PetriNetUnfolder]: For 241/243 co-relation queries the response was YES. [2023-08-30 16:54:42,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 113 events. 46/113 cut-off events. For 241/243 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 357 event pairs, 16 based on Foata normal form. 6/115 useless extension candidates. Maximal degree in co-relation 366. Up to 62 conditions per place. [2023-08-30 16:54:42,870 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 17 selfloop transitions, 3 changer transitions 13/36 dead transitions. [2023-08-30 16:54:42,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 252 flow [2023-08-30 16:54:42,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:54:42,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:54:42,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2023-08-30 16:54:42,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5755395683453237 [2023-08-30 16:54:42,872 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2023-08-30 16:54:42,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2023-08-30 16:54:42,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:42,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2023-08-30 16:54:42,873 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 16:54:42,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:42,875 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:42,875 INFO L175 Difference]: Start difference. First operand has 46 places, 17 transitions, 112 flow. Second operand 5 states and 400 transitions. [2023-08-30 16:54:42,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 252 flow [2023-08-30 16:54:42,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 175 flow, removed 7 selfloop flow, removed 16 redundant places. [2023-08-30 16:54:42,877 INFO L231 Difference]: Finished difference. Result has 35 places, 19 transitions, 87 flow [2023-08-30 16:54:42,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=87, PETRI_PLACES=35, PETRI_TRANSITIONS=19} [2023-08-30 16:54:42,877 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-08-30 16:54:42,877 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 87 flow [2023-08-30 16:54:42,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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 16:54:42,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:42,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:42,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 16:54:42,878 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:54:42,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:42,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1810660225, now seen corresponding path program 1 times [2023-08-30 16:54:42,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:42,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143605557] [2023-08-30 16:54:42,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:42,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:43,012 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 16:54:43,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:43,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143605557] [2023-08-30 16:54:43,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143605557] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:43,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:43,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:54:43,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469469102] [2023-08-30 16:54:43,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:43,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:54:43,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:43,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:54:43,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:54:43,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 139 [2023-08-30 16:54:43,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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 16:54:43,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:43,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 139 [2023-08-30 16:54:43,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:43,078 INFO L130 PetriNetUnfolder]: 24/68 cut-off events. [2023-08-30 16:54:43,078 INFO L131 PetriNetUnfolder]: For 65/72 co-relation queries the response was YES. [2023-08-30 16:54:43,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 68 events. 24/68 cut-off events. For 65/72 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 170 event pairs, 3 based on Foata normal form. 7/73 useless extension candidates. Maximal degree in co-relation 232. Up to 40 conditions per place. [2023-08-30 16:54:43,079 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 16 selfloop transitions, 5 changer transitions 13/37 dead transitions. [2023-08-30 16:54:43,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 245 flow [2023-08-30 16:54:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 16:54:43,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 16:54:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 474 transitions. [2023-08-30 16:54:43,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683453237410072 [2023-08-30 16:54:43,081 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 474 transitions. [2023-08-30 16:54:43,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 474 transitions. [2023-08-30 16:54:43,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:43,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 474 transitions. [2023-08-30 16:54:43,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 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 16:54:43,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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 16:54:43,084 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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 16:54:43,084 INFO L175 Difference]: Start difference. First operand has 35 places, 19 transitions, 87 flow. Second operand 6 states and 474 transitions. [2023-08-30 16:54:43,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 245 flow [2023-08-30 16:54:43,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 240 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 16:54:43,085 INFO L231 Difference]: Finished difference. Result has 39 places, 19 transitions, 106 flow [2023-08-30 16:54:43,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=106, PETRI_PLACES=39, PETRI_TRANSITIONS=19} [2023-08-30 16:54:43,086 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-08-30 16:54:43,086 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 19 transitions, 106 flow [2023-08-30 16:54:43,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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 16:54:43,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:43,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:43,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 16:54:43,087 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:54:43,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:43,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1948075786, now seen corresponding path program 1 times [2023-08-30 16:54:43,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:43,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007692452] [2023-08-30 16:54:43,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:43,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:43,207 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 16:54:43,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:43,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007692452] [2023-08-30 16:54:43,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007692452] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:43,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:43,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:54:43,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550650648] [2023-08-30 16:54:43,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:43,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 16:54:43,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:43,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 16:54:43,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 16:54:43,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 139 [2023-08-30 16:54:43,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 19 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 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 16:54:43,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:43,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 139 [2023-08-30 16:54:43,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:43,263 INFO L130 PetriNetUnfolder]: 11/41 cut-off events. [2023-08-30 16:54:43,264 INFO L131 PetriNetUnfolder]: For 93/101 co-relation queries the response was YES. [2023-08-30 16:54:43,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 41 events. 11/41 cut-off events. For 93/101 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 66 event pairs, 2 based on Foata normal form. 5/45 useless extension candidates. Maximal degree in co-relation 151. Up to 17 conditions per place. [2023-08-30 16:54:43,264 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-08-30 16:54:43,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 180 flow [2023-08-30 16:54:43,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:54:43,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:54:43,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 535 transitions. [2023-08-30 16:54:43,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5498458376156218 [2023-08-30 16:54:43,266 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 535 transitions. [2023-08-30 16:54:43,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 535 transitions. [2023-08-30 16:54:43,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:43,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 535 transitions. [2023-08-30 16:54:43,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.42857142857143) internal successors, (535), 7 states have internal predecessors, (535), 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 16:54:43,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:43,269 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:43,270 INFO L175 Difference]: Start difference. First operand has 39 places, 19 transitions, 106 flow. Second operand 7 states and 535 transitions. [2023-08-30 16:54:43,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 180 flow [2023-08-30 16:54:43,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 26 transitions, 153 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-30 16:54:43,271 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-30 16:54:43,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-08-30 16:54:43,271 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-08-30 16:54:43,271 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-30 16:54:43,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 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 16:54:43,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 16:54:43,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-30 16:54:43,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 16:54:43,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 16:54:43,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 16:54:43,275 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:43,277 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:54:43,277 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:54:43,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:54:43 BasicIcfg [2023-08-30 16:54:43,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:54:43,280 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:54:43,280 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:54:43,280 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:54:43,281 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:54:37" (3/4) ... [2023-08-30 16:54:43,283 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 16:54:43,288 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 16:54:43,288 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 16:54:43,288 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-30 16:54:43,292 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-30 16:54:43,292 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 16:54:43,292 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 16:54:43,292 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:54:43,331 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:54:43,332 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:54:43,332 INFO L158 Benchmark]: Toolchain (without parser) took 6435.43ms. Allocated memory was 86.0MB in the beginning and 151.0MB in the end (delta: 65.0MB). Free memory was 62.8MB in the beginning and 126.2MB in the end (delta: -63.5MB). Peak memory consumption was 91.3MB. Max. memory is 16.1GB. [2023-08-30 16:54:43,332 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 46.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:54:43,333 INFO L158 Benchmark]: CACSL2BoogieTranslator took 432.77ms. Allocated memory is still 86.0MB. Free memory was 62.5MB in the beginning and 42.6MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-30 16:54:43,333 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.65ms. Allocated memory is still 86.0MB. Free memory was 42.6MB in the beginning and 65.8MB in the end (delta: -23.2MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2023-08-30 16:54:43,333 INFO L158 Benchmark]: Boogie Preprocessor took 20.44ms. Allocated memory is still 86.0MB. Free memory was 65.8MB in the beginning and 64.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:54:43,334 INFO L158 Benchmark]: RCFGBuilder took 427.15ms. Allocated memory is still 86.0MB. Free memory was 64.3MB in the beginning and 50.6MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 16:54:43,334 INFO L158 Benchmark]: TraceAbstraction took 5455.94ms. Allocated memory was 86.0MB in the beginning and 151.0MB in the end (delta: 65.0MB). Free memory was 50.1MB in the beginning and 40.8MB in the end (delta: 9.3MB). Peak memory consumption was 76.8MB. Max. memory is 16.1GB. [2023-08-30 16:54:43,334 INFO L158 Benchmark]: Witness Printer took 51.56ms. Allocated memory is still 151.0MB. Free memory was 40.8MB in the beginning and 126.2MB in the end (delta: -85.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:54:43,336 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 46.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 432.77ms. Allocated memory is still 86.0MB. Free memory was 62.5MB in the beginning and 42.6MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.65ms. Allocated memory is still 86.0MB. Free memory was 42.6MB in the beginning and 65.8MB in the end (delta: -23.2MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.44ms. Allocated memory is still 86.0MB. Free memory was 65.8MB in the beginning and 64.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 427.15ms. Allocated memory is still 86.0MB. Free memory was 64.3MB in the beginning and 50.6MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5455.94ms. Allocated memory was 86.0MB in the beginning and 151.0MB in the end (delta: 65.0MB). Free memory was 50.1MB in the beginning and 40.8MB in the end (delta: 9.3MB). Peak memory consumption was 76.8MB. Max. memory is 16.1GB. * Witness Printer took 51.56ms. Allocated memory is still 151.0MB. Free memory was 40.8MB in the beginning and 126.2MB in the end (delta: -85.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1941 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1183, independent: 1105, independent conditional: 0, independent unconditional: 1105, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 572, independent: 554, independent conditional: 0, independent unconditional: 554, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1183, independent: 551, independent conditional: 0, independent unconditional: 551, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 572, unknown conditional: 0, unknown unconditional: 572] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 375 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 238 mSDsluCounter, 139 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 64 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 633 IncrementalHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 75 mSDtfsCounter, 633 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=376occurred in iteration=4, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 501 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 16:54:43,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE