./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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-sre-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 039f5312b62da5ff616f0ade8cc5a2dd494698e7519842b003d8d55f65a5fe6c --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 12:15:04,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 12:15:04,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 12:15:04,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 12:15:04,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 12:15:04,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 12:15:04,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 12:15:04,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 12:15:04,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 12:15:04,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 12:15:04,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 12:15:04,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 12:15:04,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 12:15:04,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 12:15:04,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 12:15:04,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 12:15:04,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 12:15:04,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 12:15:04,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 12:15:04,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 12:15:04,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 12:15:04,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 12:15:04,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 12:15:04,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 12:15:04,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 12:15:04,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 12:15:04,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 12:15:04,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 12:15:04,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 12:15:04,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 12:15:04,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 12:15:04,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 12:15:04,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 12:15:04,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 12:15:04,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 12:15:04,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 12:15:04,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 12:15:04,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 12:15:04,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 12:15:04,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 12:15:04,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 12:15:04,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 12:15:04,513 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 12:15:04,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 12:15:04,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 12:15:04,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 12:15:04,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 12:15:04,515 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 12:15:04,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 12:15:04,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 12:15:04,516 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 12:15:04,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 12:15:04,516 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 12:15:04,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 12:15:04,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 12:15:04,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 12:15:04,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 12:15:04,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 12:15:04,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 12:15:04,517 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 12:15:04,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 12:15:04,518 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 12:15:04,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 12:15:04,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 12:15:04,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 12:15:04,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 12:15:04,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:15:04,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 12:15:04,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 12:15:04,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 12:15:04,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 12:15:04,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 12:15:04,519 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 12:15:04,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 12:15:04,520 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 12:15:04,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 12:15:04,520 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 12:15:04,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 039f5312b62da5ff616f0ade8cc5a2dd494698e7519842b003d8d55f65a5fe6c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 12:15:04,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 12:15:04,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 12:15:04,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 12:15:04,775 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 12:15:04,776 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 12:15:04,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c [2023-09-01 12:15:05,797 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 12:15:05,948 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 12:15:05,948 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c [2023-09-01 12:15:05,958 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3015d86d6/829b94c6301645c4ae237ba1aa4abd18/FLAG367c627f2 [2023-09-01 12:15:05,969 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3015d86d6/829b94c6301645c4ae237ba1aa4abd18 [2023-09-01 12:15:05,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 12:15:05,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 12:15:05,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 12:15:05,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 12:15:05,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 12:15:05,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:15:05" (1/1) ... [2023-09-01 12:15:05,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68bf20ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:05, skipping insertion in model container [2023-09-01 12:15:05,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:15:05" (1/1) ... [2023-09-01 12:15:05,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 12:15:05,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 12:15:06,085 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-sre-subst.wvr.c[2333,2346] [2023-09-01 12:15:06,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:15:06,093 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 12:15:06,105 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-sre-subst.wvr.c[2333,2346] [2023-09-01 12:15:06,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:15:06,114 INFO L208 MainTranslator]: Completed translation [2023-09-01 12:15:06,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:06 WrapperNode [2023-09-01 12:15:06,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 12:15:06,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 12:15:06,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 12:15:06,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 12:15:06,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:06" (1/1) ... [2023-09-01 12:15:06,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:06" (1/1) ... [2023-09-01 12:15:06,136 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2023-09-01 12:15:06,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 12:15:06,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 12:15:06,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 12:15:06,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 12:15:06,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:06" (1/1) ... [2023-09-01 12:15:06,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:06" (1/1) ... [2023-09-01 12:15:06,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:06" (1/1) ... [2023-09-01 12:15:06,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:06" (1/1) ... [2023-09-01 12:15:06,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:06" (1/1) ... [2023-09-01 12:15:06,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:06" (1/1) ... [2023-09-01 12:15:06,148 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:06" (1/1) ... [2023-09-01 12:15:06,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:06" (1/1) ... [2023-09-01 12:15:06,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 12:15:06,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 12:15:06,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 12:15:06,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 12:15:06,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:06" (1/1) ... [2023-09-01 12:15:06,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:15:06,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:15:06,173 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) [2023-09-01 12:15:06,176 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 [2023-09-01 12:15:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 12:15:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 12:15:06,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 12:15:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 12:15:06,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 12:15:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 12:15:06,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 12:15:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 12:15:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 12:15:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 12:15:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 12:15:06,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 12:15:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 12:15:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 12:15:06,201 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 12:15:06,268 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 12:15:06,269 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 12:15:06,414 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 12:15:06,419 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 12:15:06,420 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 12:15:06,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:15:06 BoogieIcfgContainer [2023-09-01 12:15:06,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 12:15:06,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 12:15:06,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 12:15:06,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 12:15:06,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:15:05" (1/3) ... [2023-09-01 12:15:06,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6498f2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:15:06, skipping insertion in model container [2023-09-01 12:15:06,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:06" (2/3) ... [2023-09-01 12:15:06,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6498f2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:15:06, skipping insertion in model container [2023-09-01 12:15:06,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:15:06" (3/3) ... [2023-09-01 12:15:06,431 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-subst.wvr.c [2023-09-01 12:15:06,446 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 12:15:06,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 12:15:06,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 12:15:06,453 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 12:15:06,510 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 12:15:06,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 90 transitions, 204 flow [2023-09-01 12:15:06,587 INFO L130 PetriNetUnfolder]: 2/87 cut-off events. [2023-09-01 12:15:06,594 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:15:06,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 2/87 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-09-01 12:15:06,597 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 90 transitions, 204 flow [2023-09-01 12:15:06,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 77 transitions, 172 flow [2023-09-01 12:15:06,604 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 12:15:06,612 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 77 transitions, 172 flow [2023-09-01 12:15:06,622 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 77 transitions, 172 flow [2023-09-01 12:15:06,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 77 transitions, 172 flow [2023-09-01 12:15:06,652 INFO L130 PetriNetUnfolder]: 2/77 cut-off events. [2023-09-01 12:15:06,652 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:15:06,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-09-01 12:15:06,653 INFO L119 LiptonReduction]: Number of co-enabled transitions 270 [2023-09-01 12:15:08,535 INFO L134 LiptonReduction]: Checked pairs total: 323 [2023-09-01 12:15:08,535 INFO L136 LiptonReduction]: Total number of compositions: 68 [2023-09-01 12:15:08,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 12:15:08,566 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;@281d1fd5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 12:15:08,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 12:15:08,577 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-09-01 12:15:08,578 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:15:08,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:08,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:15:08,579 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)] === [2023-09-01 12:15:08,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:08,586 INFO L85 PathProgramCache]: Analyzing trace with hash -368072586, now seen corresponding path program 1 times [2023-09-01 12:15:08,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:08,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688383001] [2023-09-01 12:15:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:08,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:09,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:15:09,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:09,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688383001] [2023-09-01 12:15:09,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688383001] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:15:09,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:15:09,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:15:09,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914334334] [2023-09-01 12:15:09,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:15:09,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:15:09,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:09,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:15:09,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:15:09,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 158 [2023-09-01 12:15:09,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-09-01 12:15:09,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:09,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 158 [2023-09-01 12:15:09,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:10,236 INFO L130 PetriNetUnfolder]: 38/100 cut-off events. [2023-09-01 12:15:10,236 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-09-01 12:15:10,237 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 290 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. [2023-09-01 12:15:10,239 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 32 selfloop transitions, 6 changer transitions 7/45 dead transitions. [2023-09-01 12:15:10,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 228 flow [2023-09-01 12:15:10,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:15:10,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:15:10,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 460 transitions. [2023-09-01 12:15:10,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48523206751054854 [2023-09-01 12:15:10,250 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 460 transitions. [2023-09-01 12:15:10,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 460 transitions. [2023-09-01 12:15:10,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:10,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 460 transitions. [2023-09-01 12:15:10,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2023-09-01 12:15:10,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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) [2023-09-01 12:15:10,259 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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) [2023-09-01 12:15:10,260 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 6 states and 460 transitions. [2023-09-01 12:15:10,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 228 flow [2023-09-01 12:15:10,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 45 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 12:15:10,264 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 71 flow [2023-09-01 12:15:10,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, 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} [2023-09-01 12:15:10,267 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-09-01 12:15:10,267 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 71 flow [2023-09-01 12:15:10,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-09-01 12:15:10,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:10,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:15:10,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 12:15:10,268 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)] === [2023-09-01 12:15:10,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:10,269 INFO L85 PathProgramCache]: Analyzing trace with hash -906408670, now seen corresponding path program 2 times [2023-09-01 12:15:10,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:10,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139348750] [2023-09-01 12:15:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:10,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:10,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:15:10,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:10,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139348750] [2023-09-01 12:15:10,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139348750] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:15:10,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:15:10,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:15:10,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148339950] [2023-09-01 12:15:10,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:15:10,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:15:10,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:10,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:15:10,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:15:10,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 158 [2023-09-01 12:15:10,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-09-01 12:15:10,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:10,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 158 [2023-09-01 12:15:10,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:11,222 INFO L130 PetriNetUnfolder]: 38/116 cut-off events. [2023-09-01 12:15:11,223 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-09-01 12:15:11,223 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. [2023-09-01 12:15:11,224 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 30 selfloop transitions, 7 changer transitions 9/46 dead transitions. [2023-09-01 12:15:11,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 235 flow [2023-09-01 12:15:11,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:15:11,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:15:11,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 460 transitions. [2023-09-01 12:15:11,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48523206751054854 [2023-09-01 12:15:11,226 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 460 transitions. [2023-09-01 12:15:11,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 460 transitions. [2023-09-01 12:15:11,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:11,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 460 transitions. [2023-09-01 12:15:11,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2023-09-01 12:15:11,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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) [2023-09-01 12:15:11,229 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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) [2023-09-01 12:15:11,230 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 71 flow. Second operand 6 states and 460 transitions. [2023-09-01 12:15:11,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 235 flow [2023-09-01 12:15:11,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 231 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 12:15:11,231 INFO L231 Difference]: Finished difference. Result has 34 places, 21 transitions, 100 flow [2023-09-01 12:15:11,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, 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} [2023-09-01 12:15:11,232 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-09-01 12:15:11,232 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 100 flow [2023-09-01 12:15:11,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-09-01 12:15:11,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:11,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:15:11,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 12:15:11,233 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)] === [2023-09-01 12:15:11,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:11,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1803140076, now seen corresponding path program 3 times [2023-09-01 12:15:11,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:11,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823787653] [2023-09-01 12:15:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:11,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:11,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:15:11,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:11,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823787653] [2023-09-01 12:15:11,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823787653] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:15:11,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:15:11,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:15:11,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844308479] [2023-09-01 12:15:11,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:15:11,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:15:11,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:11,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:15:11,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:15:11,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 158 [2023-09-01 12:15:11,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-09-01 12:15:11,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:11,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 158 [2023-09-01 12:15:11,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:11,911 INFO L130 PetriNetUnfolder]: 33/103 cut-off events. [2023-09-01 12:15:11,911 INFO L131 PetriNetUnfolder]: For 160/160 co-relation queries the response was YES. [2023-09-01 12:15:11,912 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 338 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. [2023-09-01 12:15:11,912 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 27 selfloop transitions, 6 changer transitions 11/44 dead transitions. [2023-09-01 12:15:11,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 257 flow [2023-09-01 12:15:11,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:15:11,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:15:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 458 transitions. [2023-09-01 12:15:11,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831223628691983 [2023-09-01 12:15:11,914 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 458 transitions. [2023-09-01 12:15:11,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 458 transitions. [2023-09-01 12:15:11,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:11,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 458 transitions. [2023-09-01 12:15:11,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2023-09-01 12:15:11,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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) [2023-09-01 12:15:11,916 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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) [2023-09-01 12:15:11,916 INFO L175 Difference]: Start difference. First operand has 34 places, 21 transitions, 100 flow. Second operand 6 states and 458 transitions. [2023-09-01 12:15:11,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 257 flow [2023-09-01 12:15:11,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 243 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-09-01 12:15:11,918 INFO L231 Difference]: Finished difference. Result has 38 places, 20 transitions, 100 flow [2023-09-01 12:15:11,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, 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} [2023-09-01 12:15:11,919 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-09-01 12:15:11,919 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 20 transitions, 100 flow [2023-09-01 12:15:11,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-09-01 12:15:11,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:11,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:15:11,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 12:15:11,920 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)] === [2023-09-01 12:15:11,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:11,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1154451132, now seen corresponding path program 4 times [2023-09-01 12:15:11,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:11,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131536940] [2023-09-01 12:15:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:11,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:15:12,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:12,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131536940] [2023-09-01 12:15:12,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131536940] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:15:12,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:15:12,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:15:12,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915360469] [2023-09-01 12:15:12,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:15:12,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:15:12,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:12,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:15:12,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:15:12,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 158 [2023-09-01 12:15:12,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 20 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-09-01 12:15:12,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:12,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 158 [2023-09-01 12:15:12,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:12,890 INFO L130 PetriNetUnfolder]: 17/59 cut-off events. [2023-09-01 12:15:12,892 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2023-09-01 12:15:12,893 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. [2023-09-01 12:15:12,893 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 18 selfloop transitions, 5 changer transitions 13/36 dead transitions. [2023-09-01 12:15:12,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 219 flow [2023-09-01 12:15:12,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:15:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:15:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 450 transitions. [2023-09-01 12:15:12,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47468354430379744 [2023-09-01 12:15:12,895 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 450 transitions. [2023-09-01 12:15:12,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 450 transitions. [2023-09-01 12:15:12,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:12,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 450 transitions. [2023-09-01 12:15:12,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:12,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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) [2023-09-01 12:15:12,901 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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) [2023-09-01 12:15:12,901 INFO L175 Difference]: Start difference. First operand has 38 places, 20 transitions, 100 flow. Second operand 6 states and 450 transitions. [2023-09-01 12:15:12,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 219 flow [2023-09-01 12:15:12,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 202 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-09-01 12:15:12,905 INFO L231 Difference]: Finished difference. Result has 37 places, 18 transitions, 81 flow [2023-09-01 12:15:12,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, 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} [2023-09-01 12:15:12,906 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-09-01 12:15:12,906 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 18 transitions, 81 flow [2023-09-01 12:15:12,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-09-01 12:15:12,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:12,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:15:12,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 12:15:12,907 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)] === [2023-09-01 12:15:12,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:12,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1093909684, now seen corresponding path program 5 times [2023-09-01 12:15:12,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:12,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627705975] [2023-09-01 12:15:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:12,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:15:13,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627705975] [2023-09-01 12:15:13,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627705975] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:15:13,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:15:13,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:15:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813952070] [2023-09-01 12:15:13,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:15:13,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:15:13,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:13,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:15:13,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:15:13,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 158 [2023-09-01 12:15:13,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 18 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-09-01 12:15:13,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:13,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 158 [2023-09-01 12:15:13,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:13,802 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-09-01 12:15:13,802 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-09-01 12:15:13,802 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 60 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. [2023-09-01 12:15:13,803 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-09-01 12:15:13,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 178 flow [2023-09-01 12:15:13,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:15:13,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:15:13,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 445 transitions. [2023-09-01 12:15:13,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4694092827004219 [2023-09-01 12:15:13,804 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 445 transitions. [2023-09-01 12:15:13,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 445 transitions. [2023-09-01 12:15:13,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:13,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 445 transitions. [2023-09-01 12:15:13,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 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) [2023-09-01 12:15:13,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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) [2023-09-01 12:15:13,806 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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) [2023-09-01 12:15:13,806 INFO L175 Difference]: Start difference. First operand has 37 places, 18 transitions, 81 flow. Second operand 6 states and 445 transitions. [2023-09-01 12:15:13,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 178 flow [2023-09-01 12:15:13,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 144 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-09-01 12:15:13,807 INFO L231 Difference]: Finished difference. Result has 33 places, 16 transitions, 56 flow [2023-09-01 12:15:13,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, 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} [2023-09-01 12:15:13,808 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-09-01 12:15:13,808 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 16 transitions, 56 flow [2023-09-01 12:15:13,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-09-01 12:15:13,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:13,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:15:13,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 12:15:13,808 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)] === [2023-09-01 12:15:13,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:13,808 INFO L85 PathProgramCache]: Analyzing trace with hash 966950118, now seen corresponding path program 6 times [2023-09-01 12:15:13,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:13,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361089130] [2023-09-01 12:15:13,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:13,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:14,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:15:14,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:14,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361089130] [2023-09-01 12:15:14,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361089130] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:15:14,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:15:14,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:15:14,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208193463] [2023-09-01 12:15:14,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:15:14,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:15:14,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:14,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:15:14,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:15:14,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 158 [2023-09-01 12:15:14,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 16 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-09-01 12:15:14,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:14,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 158 [2023-09-01 12:15:14,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:14,772 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-09-01 12:15:14,772 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 12:15:14,772 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. [2023-09-01 12:15:14,772 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-09-01 12:15:14,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 94 flow [2023-09-01 12:15:14,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:15:14,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:15:14,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 433 transitions. [2023-09-01 12:15:14,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675105485232065 [2023-09-01 12:15:14,774 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 433 transitions. [2023-09-01 12:15:14,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 433 transitions. [2023-09-01 12:15:14,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:14,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 433 transitions. [2023-09-01 12:15:14,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2023-09-01 12:15:14,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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) [2023-09-01 12:15:14,776 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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) [2023-09-01 12:15:14,777 INFO L175 Difference]: Start difference. First operand has 33 places, 16 transitions, 56 flow. Second operand 6 states and 433 transitions. [2023-09-01 12:15:14,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 94 flow [2023-09-01 12:15:14,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 82 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-09-01 12:15:14,777 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-09-01 12:15:14,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, 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} [2023-09-01 12:15:14,778 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-09-01 12:15:14,778 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-09-01 12:15:14,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 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) [2023-09-01 12:15:14,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-09-01 12:15:14,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-09-01 12:15:14,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-09-01 12:15:14,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-09-01 12:15:14,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 12:15:14,780 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-09-01 12:15:14,786 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 12:15:14,786 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 12:15:14,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 12:15:14 BasicIcfg [2023-09-01 12:15:14,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 12:15:14,789 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 12:15:14,789 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 12:15:14,789 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 12:15:14,790 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:15:06" (3/4) ... [2023-09-01 12:15:14,791 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 12:15:14,795 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 12:15:14,795 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 12:15:14,795 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 12:15:14,799 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-09-01 12:15:14,800 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 12:15:14,800 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 12:15:14,800 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 12:15:14,828 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 12:15:14,828 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 12:15:14,828 INFO L158 Benchmark]: Toolchain (without parser) took 8856.99ms. Allocated memory was 81.8MB in the beginning and 260.0MB in the end (delta: 178.3MB). Free memory was 59.1MB in the beginning and 95.9MB in the end (delta: -36.8MB). Peak memory consumption was 143.2MB. Max. memory is 16.1GB. [2023-09-01 12:15:14,828 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 67.1MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 12:15:14,828 INFO L158 Benchmark]: CACSL2BoogieTranslator took 143.10ms. Allocated memory is still 81.8MB. Free memory was 58.9MB in the beginning and 48.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 12:15:14,829 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.40ms. Allocated memory is still 81.8MB. Free memory was 47.9MB in the beginning and 46.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 12:15:14,829 INFO L158 Benchmark]: Boogie Preprocessor took 13.99ms. Allocated memory is still 81.8MB. Free memory was 46.4MB in the beginning and 45.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 12:15:14,829 INFO L158 Benchmark]: RCFGBuilder took 270.44ms. Allocated memory is still 81.8MB. Free memory was 45.2MB in the beginning and 51.7MB in the end (delta: -6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-09-01 12:15:14,829 INFO L158 Benchmark]: TraceAbstraction took 8365.86ms. Allocated memory was 81.8MB in the beginning and 260.0MB in the end (delta: 178.3MB). Free memory was 51.1MB in the beginning and 99.1MB in the end (delta: -48.0MB). Peak memory consumption was 131.2MB. Max. memory is 16.1GB. [2023-09-01 12:15:14,830 INFO L158 Benchmark]: Witness Printer took 38.60ms. Allocated memory is still 260.0MB. Free memory was 99.1MB in the beginning and 95.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 12:15:14,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 67.1MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 143.10ms. Allocated memory is still 81.8MB. Free memory was 58.9MB in the beginning and 48.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.40ms. Allocated memory is still 81.8MB. Free memory was 47.9MB in the beginning and 46.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.99ms. Allocated memory is still 81.8MB. Free memory was 46.4MB in the beginning and 45.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 270.44ms. Allocated memory is still 81.8MB. Free memory was 45.2MB in the beginning and 51.7MB in the end (delta: -6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 8365.86ms. Allocated memory was 81.8MB in the beginning and 260.0MB in the end (delta: 178.3MB). Free memory was 51.1MB in the beginning and 99.1MB in the end (delta: -48.0MB). Peak memory consumption was 131.2MB. Max. memory is 16.1GB. * Witness Printer took 38.60ms. Allocated memory is still 260.0MB. Free memory was 99.1MB in the beginning and 95.9MB 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: 1.9s, 85 PlacesBefore, 26 PlacesAfterwards, 77 TransitionsBefore, 16 TransitionsAfterwards, 270 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 323 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 323, independent: 323, independent conditional: 0, independent unconditional: 323, 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: 149, independent: 149, independent conditional: 0, independent unconditional: 149, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 323, independent: 174, independent conditional: 0, independent unconditional: 174, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 149, unknown conditional: 0, unknown unconditional: 149] , 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: 77]: 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, 104 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: 8.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 351 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 254 mSDsluCounter, 100 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 81 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 696 IncrementalHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 19 mSDtfsCounter, 696 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.7s 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, 0.2s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2987 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! [2023-09-01 12:15:14,858 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