./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-file-item-subst.wvr.c --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/weaver/chl-file-item-subst.wvr.c -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 be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea --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 18:58:43,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 18:58:43,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 18:58:44,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 18:58:44,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 18:58:44,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 18:58:44,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 18:58:44,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 18:58:44,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 18:58:44,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 18:58:44,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 18:58:44,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 18:58:44,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 18:58:44,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 18:58:44,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 18:58:44,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 18:58:44,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 18:58:44,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 18:58:44,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 18:58:44,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 18:58:44,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 18:58:44,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 18:58:44,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 18:58:44,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 18:58:44,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 18:58:44,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 18:58:44,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 18:58:44,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 18:58:44,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 18:58:44,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 18:58:44,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 18:58:44,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 18:58:44,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 18:58:44,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 18:58:44,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 18:58:44,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 18:58:44,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 18:58:44,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 18:58:44,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 18:58:44,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 18:58:44,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 18:58:44,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 18:58:44,120 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 18:58:44,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 18:58:44,121 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 18:58:44,121 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 18:58:44,122 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 18:58:44,122 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 18:58:44,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 18:58:44,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 18:58:44,123 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 18:58:44,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 18:58:44,124 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 18:58:44,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 18:58:44,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 18:58:44,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 18:58:44,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 18:58:44,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 18:58:44,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 18:58:44,125 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 18:58:44,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 18:58:44,125 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 18:58:44,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 18:58:44,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 18:58:44,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 18:58:44,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 18:58:44,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:58:44,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 18:58:44,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 18:58:44,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 18:58:44,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 18:58:44,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 18:58:44,127 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 18:58:44,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 18:58:44,128 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 18:58:44,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 18:58:44,128 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 18:58:44,128 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 18:58:44,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 18:58:44,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 18:58:44,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 18:58:44,461 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 18:58:44,461 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 18:58:44,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-file-item-subst.wvr.c [2023-08-30 18:58:45,477 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 18:58:45,680 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 18:58:45,681 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-subst.wvr.c [2023-08-30 18:58:45,686 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9575cf787/cab98d06c37f47b0bc44c6f2d6ad2f60/FLAG37f5fb8c0 [2023-08-30 18:58:45,697 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9575cf787/cab98d06c37f47b0bc44c6f2d6ad2f60 [2023-08-30 18:58:45,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 18:58:45,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 18:58:45,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 18:58:45,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 18:58:45,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 18:58:45,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:58:45" (1/1) ... [2023-08-30 18:58:45,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75c19dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:45, skipping insertion in model container [2023-08-30 18:58:45,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:58:45" (1/1) ... [2023-08-30 18:58:45,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 18:58:45,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 18:58:45,855 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-subst.wvr.c[3015,3028] [2023-08-30 18:58:45,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:58:45,869 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 18:58:45,889 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-subst.wvr.c[3015,3028] [2023-08-30 18:58:45,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:58:45,903 INFO L208 MainTranslator]: Completed translation [2023-08-30 18:58:45,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:45 WrapperNode [2023-08-30 18:58:45,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 18:58:45,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 18:58:45,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 18:58:45,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 18:58:45,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:45" (1/1) ... [2023-08-30 18:58:45,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:45" (1/1) ... [2023-08-30 18:58:45,954 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 206 [2023-08-30 18:58:45,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 18:58:45,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 18:58:45,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 18:58:45,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 18:58:45,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:45" (1/1) ... [2023-08-30 18:58:45,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:45" (1/1) ... [2023-08-30 18:58:45,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:45" (1/1) ... [2023-08-30 18:58:45,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:45" (1/1) ... [2023-08-30 18:58:45,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:45" (1/1) ... [2023-08-30 18:58:45,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:45" (1/1) ... [2023-08-30 18:58:46,002 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:45" (1/1) ... [2023-08-30 18:58:46,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:45" (1/1) ... [2023-08-30 18:58:46,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 18:58:46,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 18:58:46,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 18:58:46,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 18:58:46,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:45" (1/1) ... [2023-08-30 18:58:46,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:58:46,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:58:46,046 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 18:58:46,065 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 18:58:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 18:58:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 18:58:46,091 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 18:58:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 18:58:46,091 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 18:58:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 18:58:46,091 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 18:58:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 18:58:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 18:58:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 18:58:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 18:58:46,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 18:58:46,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 18:58:46,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 18:58:46,094 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 18:58:46,247 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 18:58:46,249 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 18:58:46,598 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 18:58:46,608 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 18:58:46,608 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 18:58:46,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:58:46 BoogieIcfgContainer [2023-08-30 18:58:46,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 18:58:46,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 18:58:46,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 18:58:46,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 18:58:46,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:58:45" (1/3) ... [2023-08-30 18:58:46,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22fcc9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:58:46, skipping insertion in model container [2023-08-30 18:58:46,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:45" (2/3) ... [2023-08-30 18:58:46,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22fcc9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:58:46, skipping insertion in model container [2023-08-30 18:58:46,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:58:46" (3/3) ... [2023-08-30 18:58:46,619 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2023-08-30 18:58:46,626 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 18:58:46,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 18:58:46,634 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 18:58:46,634 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 18:58:46,751 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 18:58:46,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 240 transitions, 504 flow [2023-08-30 18:58:46,913 INFO L130 PetriNetUnfolder]: 20/237 cut-off events. [2023-08-30 18:58:46,913 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 18:58:46,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 237 events. 20/237 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 504 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2023-08-30 18:58:46,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 240 transitions, 504 flow [2023-08-30 18:58:46,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 227 transitions, 472 flow [2023-08-30 18:58:46,935 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 18:58:46,950 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 227 transitions, 472 flow [2023-08-30 18:58:46,953 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 227 transitions, 472 flow [2023-08-30 18:58:46,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 227 transitions, 472 flow [2023-08-30 18:58:47,025 INFO L130 PetriNetUnfolder]: 20/227 cut-off events. [2023-08-30 18:58:47,025 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 18:58:47,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 227 events. 20/227 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 504 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2023-08-30 18:58:47,037 INFO L119 LiptonReduction]: Number of co-enabled transitions 14784 [2023-08-30 18:58:53,793 INFO L134 LiptonReduction]: Checked pairs total: 14017 [2023-08-30 18:58:53,794 INFO L136 LiptonReduction]: Total number of compositions: 287 [2023-08-30 18:58:53,814 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 18:58:53,821 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;@4c7029e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 18:58:53,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 18:58:53,838 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-30 18:58:53,838 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 18:58:53,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:58:53,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:58:53,840 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 18:58:53,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:58:53,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1496840669, now seen corresponding path program 1 times [2023-08-30 18:58:53,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:58:53,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887486674] [2023-08-30 18:58:53,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:58:53,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:58:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:58:57,935 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 18:58:57,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:58:57,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887486674] [2023-08-30 18:58:57,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887486674] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:58:57,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:58:57,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 18:58:57,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661999335] [2023-08-30 18:58:57,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:58:57,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 18:58:57,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:58:57,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 18:58:57,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:58:58,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 527 [2023-08-30 18:58:58,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 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 18:58:58,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:58:58,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 527 [2023-08-30 18:58:58,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:58:58,989 INFO L130 PetriNetUnfolder]: 38/100 cut-off events. [2023-08-30 18:58:58,989 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-08-30 18:58:58,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 100 events. 38/100 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 277 event pairs, 2 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 169. Up to 38 conditions per place. [2023-08-30 18:58:58,991 INFO L137 encePairwiseOnDemand]: 522/527 looper letters, 32 selfloop transitions, 6 changer transitions 7/45 dead transitions. [2023-08-30 18:58:58,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 228 flow [2023-08-30 18:58:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 18:58:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 18:58:59,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1252 transitions. [2023-08-30 18:58:59,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39595192915876026 [2023-08-30 18:58:59,011 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1252 transitions. [2023-08-30 18:58:59,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1252 transitions. [2023-08-30 18:58:59,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:58:59,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1252 transitions. [2023-08-30 18:58:59,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.66666666666666) internal successors, (1252), 6 states have internal predecessors, (1252), 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 18:58:59,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 527.0) internal successors, (3689), 7 states have internal predecessors, (3689), 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 18:58:59,034 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 527.0) internal successors, (3689), 7 states have internal predecessors, (3689), 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 18:58:59,036 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 6 states and 1252 transitions. [2023-08-30 18:58:59,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 228 flow [2023-08-30 18:58:59,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 45 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 18:58:59,041 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 71 flow [2023-08-30 18:58:59,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=527, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-08-30 18:58:59,045 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-08-30 18:58:59,045 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 71 flow [2023-08-30 18:58:59,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 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 18:58:59,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:58:59,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:58:59,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 18:58:59,046 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 18:58:59,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:58:59,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1415851831, now seen corresponding path program 2 times [2023-08-30 18:58:59,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:58:59,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788418469] [2023-08-30 18:58:59,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:58:59,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:58:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:00,807 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 18:59:00,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:00,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788418469] [2023-08-30 18:59:00,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788418469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:00,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:00,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 18:59:00,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023451088] [2023-08-30 18:59:00,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:00,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 18:59:00,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:00,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 18:59:00,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:59:01,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 527 [2023-08-30 18:59:01,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 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 18:59:01,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:01,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 527 [2023-08-30 18:59:01,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:01,564 INFO L130 PetriNetUnfolder]: 38/116 cut-off events. [2023-08-30 18:59:01,564 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-08-30 18:59:01,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 116 events. 38/116 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 408 event pairs, 6 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 309. Up to 58 conditions per place. [2023-08-30 18:59:01,565 INFO L137 encePairwiseOnDemand]: 522/527 looper letters, 30 selfloop transitions, 7 changer transitions 9/46 dead transitions. [2023-08-30 18:59:01,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 235 flow [2023-08-30 18:59:01,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 18:59:01,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 18:59:01,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1252 transitions. [2023-08-30 18:59:01,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39595192915876026 [2023-08-30 18:59:01,569 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1252 transitions. [2023-08-30 18:59:01,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1252 transitions. [2023-08-30 18:59:01,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:01,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1252 transitions. [2023-08-30 18:59:01,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.66666666666666) internal successors, (1252), 6 states have internal predecessors, (1252), 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 18:59:01,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 527.0) internal successors, (3689), 7 states have internal predecessors, (3689), 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 18:59:01,580 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 527.0) internal successors, (3689), 7 states have internal predecessors, (3689), 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 18:59:01,580 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 71 flow. Second operand 6 states and 1252 transitions. [2023-08-30 18:59:01,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 235 flow [2023-08-30 18:59:01,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 231 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 18:59:01,582 INFO L231 Difference]: Finished difference. Result has 34 places, 21 transitions, 100 flow [2023-08-30 18:59:01,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=527, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2023-08-30 18:59:01,583 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-08-30 18:59:01,583 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 100 flow [2023-08-30 18:59:01,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 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 18:59:01,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:01,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:59:01,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 18:59:01,585 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 18:59:01,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:01,585 INFO L85 PathProgramCache]: Analyzing trace with hash 588589793, now seen corresponding path program 3 times [2023-08-30 18:59:01,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:01,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495070919] [2023-08-30 18:59:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:01,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:03,582 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 18:59:03,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:03,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495070919] [2023-08-30 18:59:03,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495070919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:03,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:03,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 18:59:03,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006723522] [2023-08-30 18:59:03,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:03,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 18:59:03,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:03,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 18:59:03,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:59:03,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 527 [2023-08-30 18:59:03,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 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 18:59:03,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:03,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 527 [2023-08-30 18:59:03,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:04,313 INFO L130 PetriNetUnfolder]: 33/103 cut-off events. [2023-08-30 18:59:04,313 INFO L131 PetriNetUnfolder]: For 160/160 co-relation queries the response was YES. [2023-08-30 18:59:04,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 103 events. 33/103 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 339 event pairs, 2 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 334. Up to 51 conditions per place. [2023-08-30 18:59:04,314 INFO L137 encePairwiseOnDemand]: 522/527 looper letters, 27 selfloop transitions, 6 changer transitions 11/44 dead transitions. [2023-08-30 18:59:04,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 257 flow [2023-08-30 18:59:04,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 18:59:04,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 18:59:04,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1250 transitions. [2023-08-30 18:59:04,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953194180898166 [2023-08-30 18:59:04,321 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1250 transitions. [2023-08-30 18:59:04,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1250 transitions. [2023-08-30 18:59:04,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:04,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1250 transitions. [2023-08-30 18:59:04,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.33333333333334) internal successors, (1250), 6 states have internal predecessors, (1250), 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 18:59:04,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 527.0) internal successors, (3689), 7 states have internal predecessors, (3689), 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 18:59:04,331 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 527.0) internal successors, (3689), 7 states have internal predecessors, (3689), 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 18:59:04,331 INFO L175 Difference]: Start difference. First operand has 34 places, 21 transitions, 100 flow. Second operand 6 states and 1250 transitions. [2023-08-30 18:59:04,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 257 flow [2023-08-30 18:59:04,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 243 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 18:59:04,334 INFO L231 Difference]: Finished difference. Result has 38 places, 20 transitions, 100 flow [2023-08-30 18:59:04,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=527, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=20} [2023-08-30 18:59:04,335 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-08-30 18:59:04,335 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 20 transitions, 100 flow [2023-08-30 18:59:04,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 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 18:59:04,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:04,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:59:04,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 18:59:04,337 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 18:59:04,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:04,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1389710469, now seen corresponding path program 4 times [2023-08-30 18:59:04,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:04,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785742472] [2023-08-30 18:59:04,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:04,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:05,768 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 18:59:05,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:05,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785742472] [2023-08-30 18:59:05,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785742472] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:05,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:05,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 18:59:05,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187638294] [2023-08-30 18:59:05,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:05,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 18:59:05,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:05,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 18:59:05,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:59:06,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 527 [2023-08-30 18:59:06,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 20 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 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 18:59:06,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:06,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 527 [2023-08-30 18:59:06,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:06,497 INFO L130 PetriNetUnfolder]: 17/59 cut-off events. [2023-08-30 18:59:06,497 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2023-08-30 18:59:06,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 59 events. 17/59 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 134 event pairs, 0 based on Foata normal form. 1/60 useless extension candidates. Maximal degree in co-relation 205. Up to 20 conditions per place. [2023-08-30 18:59:06,498 INFO L137 encePairwiseOnDemand]: 522/527 looper letters, 18 selfloop transitions, 5 changer transitions 13/36 dead transitions. [2023-08-30 18:59:06,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 219 flow [2023-08-30 18:59:06,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 18:59:06,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 18:59:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1242 transitions. [2023-08-30 18:59:06,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3927893738140417 [2023-08-30 18:59:06,502 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1242 transitions. [2023-08-30 18:59:06,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1242 transitions. [2023-08-30 18:59:06,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:06,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1242 transitions. [2023-08-30 18:59:06,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.0) internal successors, (1242), 6 states have internal predecessors, (1242), 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 18:59:06,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 527.0) internal successors, (3689), 7 states have internal predecessors, (3689), 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 18:59:06,511 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 527.0) internal successors, (3689), 7 states have internal predecessors, (3689), 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 18:59:06,511 INFO L175 Difference]: Start difference. First operand has 38 places, 20 transitions, 100 flow. Second operand 6 states and 1242 transitions. [2023-08-30 18:59:06,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 219 flow [2023-08-30 18:59:06,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 202 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-30 18:59:06,514 INFO L231 Difference]: Finished difference. Result has 37 places, 18 transitions, 81 flow [2023-08-30 18:59:06,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=527, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=37, PETRI_TRANSITIONS=18} [2023-08-30 18:59:06,515 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-08-30 18:59:06,515 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 18 transitions, 81 flow [2023-08-30 18:59:06,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 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 18:59:06,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:06,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:59:06,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 18:59:06,516 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 18:59:06,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:06,516 INFO L85 PathProgramCache]: Analyzing trace with hash 512523841, now seen corresponding path program 5 times [2023-08-30 18:59:06,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:06,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397347443] [2023-08-30 18:59:06,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:06,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:08,150 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 18:59:08,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:08,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397347443] [2023-08-30 18:59:08,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397347443] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:08,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:08,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 18:59:08,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673849305] [2023-08-30 18:59:08,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:08,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 18:59:08,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:08,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 18:59:08,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:59:08,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 527 [2023-08-30 18:59:08,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 18 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 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 18:59:08,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:08,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 527 [2023-08-30 18:59:08,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:09,028 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-08-30 18:59:09,028 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-08-30 18:59:09,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 40 events. 8/40 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 61 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 134. Up to 19 conditions per place. [2023-08-30 18:59:09,029 INFO L137 encePairwiseOnDemand]: 522/527 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-08-30 18:59:09,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 178 flow [2023-08-30 18:59:09,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 18:59:09,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 18:59:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1237 transitions. [2023-08-30 18:59:09,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3912080961416825 [2023-08-30 18:59:09,033 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1237 transitions. [2023-08-30 18:59:09,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1237 transitions. [2023-08-30 18:59:09,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:09,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1237 transitions. [2023-08-30 18:59:09,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 206.16666666666666) internal successors, (1237), 6 states have internal predecessors, (1237), 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 18:59:09,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 527.0) internal successors, (3689), 7 states have internal predecessors, (3689), 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 18:59:09,041 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 527.0) internal successors, (3689), 7 states have internal predecessors, (3689), 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 18:59:09,041 INFO L175 Difference]: Start difference. First operand has 37 places, 18 transitions, 81 flow. Second operand 6 states and 1237 transitions. [2023-08-30 18:59:09,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 178 flow [2023-08-30 18:59:09,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 144 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-30 18:59:09,043 INFO L231 Difference]: Finished difference. Result has 33 places, 16 transitions, 56 flow [2023-08-30 18:59:09,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=527, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=56, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2023-08-30 18:59:09,044 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-08-30 18:59:09,044 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 16 transitions, 56 flow [2023-08-30 18:59:09,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 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 18:59:09,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:09,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:59:09,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 18:59:09,045 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 18:59:09,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:09,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1257226339, now seen corresponding path program 6 times [2023-08-30 18:59:09,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:09,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351550991] [2023-08-30 18:59:09,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:09,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:10,713 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 18:59:10,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:10,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351550991] [2023-08-30 18:59:10,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351550991] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:10,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:10,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 18:59:10,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124064784] [2023-08-30 18:59:10,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:10,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 18:59:10,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:10,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 18:59:10,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:59:11,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 527 [2023-08-30 18:59:11,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 16 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 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 18:59:11,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:11,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 527 [2023-08-30 18:59:11,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:11,726 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-08-30 18:59:11,726 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 18:59:11,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 62. Up to 8 conditions per place. [2023-08-30 18:59:11,727 INFO L137 encePairwiseOnDemand]: 522/527 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-08-30 18:59:11,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 94 flow [2023-08-30 18:59:11,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 18:59:11,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 18:59:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1225 transitions. [2023-08-30 18:59:11,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3874130297280202 [2023-08-30 18:59:11,735 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1225 transitions. [2023-08-30 18:59:11,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1225 transitions. [2023-08-30 18:59:11,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:11,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1225 transitions. [2023-08-30 18:59:11,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.16666666666666) internal successors, (1225), 6 states have internal predecessors, (1225), 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 18:59:11,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 527.0) internal successors, (3689), 7 states have internal predecessors, (3689), 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 18:59:11,742 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 527.0) internal successors, (3689), 7 states have internal predecessors, (3689), 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 18:59:11,743 INFO L175 Difference]: Start difference. First operand has 33 places, 16 transitions, 56 flow. Second operand 6 states and 1225 transitions. [2023-08-30 18:59:11,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 94 flow [2023-08-30 18:59:11,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 82 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 18:59:11,744 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-08-30 18:59:11,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=527, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-08-30 18:59:11,747 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-30 18:59:11,747 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-08-30 18:59:11,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 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 18:59:11,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 18:59:11,755 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-30 18:59:11,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 18:59:11,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 18:59:11,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 18:59:11,757 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-08-30 18:59:11,760 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 18:59:11,762 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 18:59:11,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 06:59:11 BasicIcfg [2023-08-30 18:59:11,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 18:59:11,765 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 18:59:11,766 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 18:59:11,767 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 18:59:11,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:58:46" (3/4) ... [2023-08-30 18:59:11,770 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 18:59:11,775 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 18:59:11,775 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 18:59:11,775 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 18:59:11,780 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-30 18:59:11,780 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 18:59:11,780 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 18:59:11,781 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 18:59:11,827 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 18:59:11,828 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 18:59:11,828 INFO L158 Benchmark]: Toolchain (without parser) took 26127.37ms. Allocated memory was 71.3MB in the beginning and 465.6MB in the end (delta: 394.3MB). Free memory was 47.7MB in the beginning and 292.7MB in the end (delta: -245.0MB). Peak memory consumption was 150.9MB. Max. memory is 16.1GB. [2023-08-30 18:59:11,828 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 71.3MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 18:59:11,829 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.25ms. Allocated memory is still 71.3MB. Free memory was 47.5MB in the beginning and 35.7MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 18:59:11,829 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.56ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 35.6MB in the beginning and 65.8MB in the end (delta: -30.2MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2023-08-30 18:59:11,829 INFO L158 Benchmark]: Boogie Preprocessor took 54.61ms. Allocated memory is still 86.0MB. Free memory was 65.8MB in the beginning and 64.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 18:59:11,830 INFO L158 Benchmark]: RCFGBuilder took 599.86ms. Allocated memory is still 86.0MB. Free memory was 64.2MB in the beginning and 44.4MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-08-30 18:59:11,830 INFO L158 Benchmark]: TraceAbstraction took 25151.92ms. Allocated memory was 86.0MB in the beginning and 465.6MB in the end (delta: 379.6MB). Free memory was 43.6MB in the beginning and 295.8MB in the end (delta: -252.2MB). Peak memory consumption was 126.9MB. Max. memory is 16.1GB. [2023-08-30 18:59:11,830 INFO L158 Benchmark]: Witness Printer took 62.39ms. Allocated memory is still 465.6MB. Free memory was 295.8MB in the beginning and 292.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 18:59:11,832 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 71.3MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 202.25ms. Allocated memory is still 71.3MB. Free memory was 47.5MB in the beginning and 35.7MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.56ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 35.6MB in the beginning and 65.8MB in the end (delta: -30.2MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.61ms. Allocated memory is still 86.0MB. Free memory was 65.8MB in the beginning and 64.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 599.86ms. Allocated memory is still 86.0MB. Free memory was 64.2MB in the beginning and 44.4MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 25151.92ms. Allocated memory was 86.0MB in the beginning and 465.6MB in the end (delta: 379.6MB). Free memory was 43.6MB in the beginning and 295.8MB in the end (delta: -252.2MB). Peak memory consumption was 126.9MB. Max. memory is 16.1GB. * Witness Printer took 62.39ms. Allocated memory is still 465.6MB. Free memory was 295.8MB in the beginning and 292.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.8s, 217 PlacesBefore, 26 PlacesAfterwards, 227 TransitionsBefore, 16 TransitionsAfterwards, 14784 CoEnabledTransitionPairs, 8 FixpointIterations, 66 TrivialSequentialCompositions, 123 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 70 ConcurrentYvCompositions, 20 ChoiceCompositions, 287 TotalNumberOfCompositions, 14017 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14017, independent: 14017, independent conditional: 0, independent unconditional: 14017, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9372, independent: 9372, independent conditional: 0, independent unconditional: 9372, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14017, independent: 4645, independent conditional: 0, independent unconditional: 4645, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 9372, unknown conditional: 0, unknown unconditional: 9372] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 84]: 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, 341 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: 25.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1426 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 904 mSDsluCounter, 676 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 472 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1871 IncrementalHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 204 mSDtfsCounter, 1871 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=2, InterpolantAutomatonStates: 36, 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, 0.5s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 6423 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 18:59:11,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE