./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-exp-term-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-exp-term-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 a4208e364fc80ce33bd799516b7b127a7314c394860a88240a88c2fb8dc1fa8b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 01:15:24,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:15:24,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:15:24,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:15:24,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:15:24,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:15:24,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:15:24,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:15:24,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:15:24,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:15:24,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:15:24,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:15:24,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:15:24,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:15:24,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:15:24,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:15:24,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:15:24,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:15:24,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:15:24,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:15:24,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:15:24,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:15:24,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:15:24,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:15:24,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:15:24,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:15:24,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:15:24,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:15:24,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:15:24,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:15:24,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:15:24,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:15:24,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:15:24,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:15:24,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:15:24,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:15:24,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:15:24,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:15:24,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:15:24,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:15:24,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:15:24,232 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:15:24,263 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:15:24,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:15:24,265 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:15:24,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:15:24,266 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:15:24,266 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:15:24,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:15:24,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:15:24,267 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:15:24,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:15:24,268 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:15:24,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:15:24,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:15:24,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:15:24,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:15:24,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:15:24,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:15:24,269 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:15:24,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:15:24,270 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:15:24,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:15:24,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:15:24,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:15:24,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:15:24,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:15:24,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:15:24,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:15:24,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:15:24,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:15:24,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:15:24,272 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:15:24,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:15:24,272 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:15:24,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:15:24,273 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:15:24,273 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4208e364fc80ce33bd799516b7b127a7314c394860a88240a88c2fb8dc1fa8b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:15:24,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:15:24,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:15:24,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:15:24,569 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:15:24,569 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:15:24,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-exp-term-subst.wvr.c [2023-08-31 01:15:25,736 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:15:25,932 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:15:25,933 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-exp-term-subst.wvr.c [2023-08-31 01:15:25,940 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d8c95e19/2e1a680b91594fcb9eeb770372de746e/FLAG4aef9b477 [2023-08-31 01:15:25,962 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d8c95e19/2e1a680b91594fcb9eeb770372de746e [2023-08-31 01:15:25,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:15:25,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:15:25,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:15:25,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:15:25,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:15:25,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:15:25" (1/1) ... [2023-08-31 01:15:25,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69769f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:25, skipping insertion in model container [2023-08-31 01:15:25,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:15:25" (1/1) ... [2023-08-31 01:15:25,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:15:25,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:15:26,138 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-exp-term-subst.wvr.c[3072,3085] [2023-08-31 01:15:26,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:15:26,162 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:15:26,198 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-exp-term-subst.wvr.c[3072,3085] [2023-08-31 01:15:26,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:15:26,220 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:15:26,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:26 WrapperNode [2023-08-31 01:15:26,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:15:26,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:15:26,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:15:26,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:15:26,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:26" (1/1) ... [2023-08-31 01:15:26,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:26" (1/1) ... [2023-08-31 01:15:26,283 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 182 [2023-08-31 01:15:26,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:15:26,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:15:26,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:15:26,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:15:26,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:26" (1/1) ... [2023-08-31 01:15:26,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:26" (1/1) ... [2023-08-31 01:15:26,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:26" (1/1) ... [2023-08-31 01:15:26,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:26" (1/1) ... [2023-08-31 01:15:26,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:26" (1/1) ... [2023-08-31 01:15:26,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:26" (1/1) ... [2023-08-31 01:15:26,324 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:26" (1/1) ... [2023-08-31 01:15:26,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:26" (1/1) ... [2023-08-31 01:15:26,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:15:26,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:15:26,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:15:26,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:15:26,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:26" (1/1) ... [2023-08-31 01:15:26,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:15:26,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:15:26,374 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) [2023-08-31 01:15:26,409 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 [2023-08-31 01:15:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:15:26,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:15:26,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:15:26,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:15:26,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:15:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 01:15:26,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 01:15:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:15:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:15:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:15:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:15:26,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:15:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:15:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:15:26,425 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 01:15:26,538 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:15:26,540 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:15:26,879 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:15:26,887 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:15:26,888 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 01:15:26,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:15:26 BoogieIcfgContainer [2023-08-31 01:15:26,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:15:26,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:15:26,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:15:26,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:15:26,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:15:25" (1/3) ... [2023-08-31 01:15:26,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc412d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:15:26, skipping insertion in model container [2023-08-31 01:15:26,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:26" (2/3) ... [2023-08-31 01:15:26,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc412d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:15:26, skipping insertion in model container [2023-08-31 01:15:26,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:15:26" (3/3) ... [2023-08-31 01:15:26,898 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-exp-term-subst.wvr.c [2023-08-31 01:15:26,905 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:15:26,913 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:15:26,913 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:15:26,913 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:15:27,042 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 01:15:27,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 213 transitions, 450 flow [2023-08-31 01:15:27,183 INFO L130 PetriNetUnfolder]: 17/210 cut-off events. [2023-08-31 01:15:27,183 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:15:27,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 210 events. 17/210 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 431 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2023-08-31 01:15:27,196 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 213 transitions, 450 flow [2023-08-31 01:15:27,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 200 transitions, 418 flow [2023-08-31 01:15:27,204 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:15:27,212 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 200 transitions, 418 flow [2023-08-31 01:15:27,215 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 200 transitions, 418 flow [2023-08-31 01:15:27,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 200 transitions, 418 flow [2023-08-31 01:15:27,257 INFO L130 PetriNetUnfolder]: 17/200 cut-off events. [2023-08-31 01:15:27,257 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:15:27,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 200 events. 17/200 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 430 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2023-08-31 01:15:27,265 INFO L119 LiptonReduction]: Number of co-enabled transitions 11934 [2023-08-31 01:15:33,354 INFO L134 LiptonReduction]: Checked pairs total: 11598 [2023-08-31 01:15:33,355 INFO L136 LiptonReduction]: Total number of compositions: 246 [2023-08-31 01:15:33,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:15:33,373 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;@60ac887d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:15:33,374 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 01:15:33,379 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-31 01:15:33,380 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:15:33,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:15:33,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:15:33,381 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)] === [2023-08-31 01:15:33,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:15:33,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1027874846, now seen corresponding path program 1 times [2023-08-31 01:15:33,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:15:33,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875685024] [2023-08-31 01:15:33,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:15:33,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:15:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:15:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:15:36,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:15:36,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875685024] [2023-08-31 01:15:36,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875685024] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:15:36,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:15:36,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:15:36,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836512094] [2023-08-31 01:15:36,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:15:36,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:15:36,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:15:36,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:15:36,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:15:37,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 459 [2023-08-31 01:15:37,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 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) [2023-08-31 01:15:37,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:15:37,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 459 [2023-08-31 01:15:37,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:15:37,515 INFO L130 PetriNetUnfolder]: 38/100 cut-off events. [2023-08-31 01:15:37,515 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-08-31 01:15:37,515 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 287 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. [2023-08-31 01:15:37,517 INFO L137 encePairwiseOnDemand]: 454/459 looper letters, 32 selfloop transitions, 6 changer transitions 7/45 dead transitions. [2023-08-31 01:15:37,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 228 flow [2023-08-31 01:15:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:15:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:15:37,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1120 transitions. [2023-08-31 01:15:37,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066811909949165 [2023-08-31 01:15:37,537 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1120 transitions. [2023-08-31 01:15:37,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1120 transitions. [2023-08-31 01:15:37,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:15:37,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1120 transitions. [2023-08-31 01:15:37,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.66666666666666) internal successors, (1120), 6 states have internal predecessors, (1120), 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) [2023-08-31 01:15:37,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 459.0) internal successors, (3213), 7 states have internal predecessors, (3213), 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) [2023-08-31 01:15:37,556 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 459.0) internal successors, (3213), 7 states have internal predecessors, (3213), 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) [2023-08-31 01:15:37,558 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 6 states and 1120 transitions. [2023-08-31 01:15:37,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 228 flow [2023-08-31 01:15:37,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 45 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 01:15:37,563 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 71 flow [2023-08-31 01:15:37,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, 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} [2023-08-31 01:15:37,567 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-08-31 01:15:37,567 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 71 flow [2023-08-31 01:15:37,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 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) [2023-08-31 01:15:37,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:15:37,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:15:37,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:15:37,569 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)] === [2023-08-31 01:15:37,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:15:37,570 INFO L85 PathProgramCache]: Analyzing trace with hash 259785764, now seen corresponding path program 2 times [2023-08-31 01:15:37,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:15:37,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689603976] [2023-08-31 01:15:37,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:15:37,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:15:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:15:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:15:39,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:15:39,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689603976] [2023-08-31 01:15:39,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689603976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:15:39,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:15:39,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:15:39,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394968028] [2023-08-31 01:15:39,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:15:39,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:15:39,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:15:39,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:15:39,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:15:39,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 459 [2023-08-31 01:15:39,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 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) [2023-08-31 01:15:39,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:15:39,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 459 [2023-08-31 01:15:39,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:15:39,684 INFO L130 PetriNetUnfolder]: 38/116 cut-off events. [2023-08-31 01:15:39,685 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-08-31 01:15:39,685 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 410 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. [2023-08-31 01:15:39,686 INFO L137 encePairwiseOnDemand]: 454/459 looper letters, 30 selfloop transitions, 7 changer transitions 9/46 dead transitions. [2023-08-31 01:15:39,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 235 flow [2023-08-31 01:15:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:15:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:15:39,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1114 transitions. [2023-08-31 01:15:39,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4045025417574437 [2023-08-31 01:15:39,690 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1114 transitions. [2023-08-31 01:15:39,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1114 transitions. [2023-08-31 01:15:39,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:15:39,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1114 transitions. [2023-08-31 01:15:39,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 185.66666666666666) internal successors, (1114), 6 states have internal predecessors, (1114), 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) [2023-08-31 01:15:39,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 459.0) internal successors, (3213), 7 states have internal predecessors, (3213), 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) [2023-08-31 01:15:39,699 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 459.0) internal successors, (3213), 7 states have internal predecessors, (3213), 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) [2023-08-31 01:15:39,699 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 71 flow. Second operand 6 states and 1114 transitions. [2023-08-31 01:15:39,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 235 flow [2023-08-31 01:15:39,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 231 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-31 01:15:39,701 INFO L231 Difference]: Finished difference. Result has 34 places, 21 transitions, 100 flow [2023-08-31 01:15:39,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, 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} [2023-08-31 01:15:39,702 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-08-31 01:15:39,702 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 100 flow [2023-08-31 01:15:39,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 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) [2023-08-31 01:15:39,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:15:39,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:15:39,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 01:15:39,704 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)] === [2023-08-31 01:15:39,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:15:39,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1293633522, now seen corresponding path program 3 times [2023-08-31 01:15:39,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:15:39,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339050458] [2023-08-31 01:15:39,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:15:39,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:15:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:15:40,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:15:40,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:15:40,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339050458] [2023-08-31 01:15:40,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339050458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:15:40,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:15:40,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:15:40,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540380475] [2023-08-31 01:15:40,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:15:40,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:15:40,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:15:40,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:15:40,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:15:41,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 459 [2023-08-31 01:15:41,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 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) [2023-08-31 01:15:41,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:15:41,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 459 [2023-08-31 01:15:41,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:15:41,352 INFO L130 PetriNetUnfolder]: 33/103 cut-off events. [2023-08-31 01:15:41,352 INFO L131 PetriNetUnfolder]: For 160/160 co-relation queries the response was YES. [2023-08-31 01:15:41,355 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. [2023-08-31 01:15:41,357 INFO L137 encePairwiseOnDemand]: 454/459 looper letters, 27 selfloop transitions, 6 changer transitions 11/44 dead transitions. [2023-08-31 01:15:41,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 257 flow [2023-08-31 01:15:41,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:15:41,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:15:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1112 transitions. [2023-08-31 01:15:41,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037763253449528 [2023-08-31 01:15:41,361 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1112 transitions. [2023-08-31 01:15:41,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1112 transitions. [2023-08-31 01:15:41,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:15:41,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1112 transitions. [2023-08-31 01:15:41,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 185.33333333333334) internal successors, (1112), 6 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:41,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 459.0) internal successors, (3213), 7 states have internal predecessors, (3213), 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) [2023-08-31 01:15:41,370 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 459.0) internal successors, (3213), 7 states have internal predecessors, (3213), 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) [2023-08-31 01:15:41,370 INFO L175 Difference]: Start difference. First operand has 34 places, 21 transitions, 100 flow. Second operand 6 states and 1112 transitions. [2023-08-31 01:15:41,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 257 flow [2023-08-31 01:15:41,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 243 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-31 01:15:41,373 INFO L231 Difference]: Finished difference. Result has 38 places, 20 transitions, 100 flow [2023-08-31 01:15:41,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, 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} [2023-08-31 01:15:41,374 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-08-31 01:15:41,374 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 20 transitions, 100 flow [2023-08-31 01:15:41,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 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) [2023-08-31 01:15:41,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:15:41,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:15:41,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 01:15:41,382 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)] === [2023-08-31 01:15:41,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:15:41,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1004488262, now seen corresponding path program 4 times [2023-08-31 01:15:41,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:15:41,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832387853] [2023-08-31 01:15:41,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:15:41,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:15:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:15:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:15:42,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:15:42,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832387853] [2023-08-31 01:15:42,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832387853] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:15:42,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:15:42,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:15:42,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504740067] [2023-08-31 01:15:42,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:15:42,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:15:42,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:15:42,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:15:42,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:15:42,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 459 [2023-08-31 01:15:42,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 20 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 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) [2023-08-31 01:15:42,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:15:42,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 459 [2023-08-31 01:15:42,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:15:43,470 INFO L130 PetriNetUnfolder]: 17/59 cut-off events. [2023-08-31 01:15:43,471 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2023-08-31 01:15:43,471 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. [2023-08-31 01:15:43,471 INFO L137 encePairwiseOnDemand]: 454/459 looper letters, 18 selfloop transitions, 5 changer transitions 13/36 dead transitions. [2023-08-31 01:15:43,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 219 flow [2023-08-31 01:15:43,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:15:43,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:15:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1110 transitions. [2023-08-31 01:15:43,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40305010893246185 [2023-08-31 01:15:43,475 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1110 transitions. [2023-08-31 01:15:43,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1110 transitions. [2023-08-31 01:15:43,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:15:43,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1110 transitions. [2023-08-31 01:15:43,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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) [2023-08-31 01:15:43,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 459.0) internal successors, (3213), 7 states have internal predecessors, (3213), 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) [2023-08-31 01:15:43,485 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 459.0) internal successors, (3213), 7 states have internal predecessors, (3213), 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) [2023-08-31 01:15:43,485 INFO L175 Difference]: Start difference. First operand has 38 places, 20 transitions, 100 flow. Second operand 6 states and 1110 transitions. [2023-08-31 01:15:43,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 219 flow [2023-08-31 01:15:43,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 202 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-31 01:15:43,487 INFO L231 Difference]: Finished difference. Result has 37 places, 18 transitions, 81 flow [2023-08-31 01:15:43,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, 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} [2023-08-31 01:15:43,488 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-08-31 01:15:43,488 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 18 transitions, 81 flow [2023-08-31 01:15:43,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 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) [2023-08-31 01:15:43,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:15:43,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:15:43,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 01:15:43,490 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)] === [2023-08-31 01:15:43,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:15:43,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1228683558, now seen corresponding path program 5 times [2023-08-31 01:15:43,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:15:43,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706433354] [2023-08-31 01:15:43,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:15:43,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:15:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:15:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:15:44,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:15:44,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706433354] [2023-08-31 01:15:44,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706433354] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:15:44,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:15:44,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:15:44,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843748206] [2023-08-31 01:15:44,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:15:44,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:15:44,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:15:44,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:15:44,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:15:44,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 459 [2023-08-31 01:15:44,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 18 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 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) [2023-08-31 01:15:44,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:15:44,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 459 [2023-08-31 01:15:44,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:15:45,290 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-08-31 01:15:45,290 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-08-31 01:15:45,290 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 4. Compared 57 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. [2023-08-31 01:15:45,291 INFO L137 encePairwiseOnDemand]: 454/459 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-08-31 01:15:45,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 178 flow [2023-08-31 01:15:45,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:15:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:15:45,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1105 transitions. [2023-08-31 01:15:45,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012345679012346 [2023-08-31 01:15:45,295 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1105 transitions. [2023-08-31 01:15:45,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1105 transitions. [2023-08-31 01:15:45,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:15:45,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1105 transitions. [2023-08-31 01:15:45,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 184.16666666666666) internal successors, (1105), 6 states have internal predecessors, (1105), 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) [2023-08-31 01:15:45,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 459.0) internal successors, (3213), 7 states have internal predecessors, (3213), 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) [2023-08-31 01:15:45,302 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 459.0) internal successors, (3213), 7 states have internal predecessors, (3213), 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) [2023-08-31 01:15:45,302 INFO L175 Difference]: Start difference. First operand has 37 places, 18 transitions, 81 flow. Second operand 6 states and 1105 transitions. [2023-08-31 01:15:45,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 178 flow [2023-08-31 01:15:45,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 144 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-31 01:15:45,306 INFO L231 Difference]: Finished difference. Result has 33 places, 16 transitions, 56 flow [2023-08-31 01:15:45,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, 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} [2023-08-31 01:15:45,308 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-08-31 01:15:45,308 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 16 transitions, 56 flow [2023-08-31 01:15:45,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 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) [2023-08-31 01:15:45,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:15:45,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:15:45,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 01:15:45,309 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)] === [2023-08-31 01:15:45,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:15:45,310 INFO L85 PathProgramCache]: Analyzing trace with hash -260721438, now seen corresponding path program 6 times [2023-08-31 01:15:45,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:15:45,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393660829] [2023-08-31 01:15:45,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:15:45,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:15:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:15:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:15:46,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:15:46,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393660829] [2023-08-31 01:15:46,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393660829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:15:46,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:15:46,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:15:46,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079113457] [2023-08-31 01:15:46,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:15:46,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:15:46,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:15:46,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:15:46,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:15:46,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 459 [2023-08-31 01:15:46,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 16 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 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) [2023-08-31 01:15:46,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:15:46,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 459 [2023-08-31 01:15:46,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:15:47,200 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-08-31 01:15:47,201 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 01:15:47,201 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 2. Compared 9 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. [2023-08-31 01:15:47,201 INFO L137 encePairwiseOnDemand]: 454/459 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-08-31 01:15:47,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 94 flow [2023-08-31 01:15:47,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:15:47,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:15:47,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1087 transitions. [2023-08-31 01:15:47,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39469862018881624 [2023-08-31 01:15:47,204 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1087 transitions. [2023-08-31 01:15:47,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1087 transitions. [2023-08-31 01:15:47,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:15:47,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1087 transitions. [2023-08-31 01:15:47,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 181.16666666666666) internal successors, (1087), 6 states have internal predecessors, (1087), 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) [2023-08-31 01:15:47,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 459.0) internal successors, (3213), 7 states have internal predecessors, (3213), 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) [2023-08-31 01:15:47,211 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 459.0) internal successors, (3213), 7 states have internal predecessors, (3213), 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) [2023-08-31 01:15:47,211 INFO L175 Difference]: Start difference. First operand has 33 places, 16 transitions, 56 flow. Second operand 6 states and 1087 transitions. [2023-08-31 01:15:47,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 94 flow [2023-08-31 01:15:47,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 82 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-31 01:15:47,212 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-08-31 01:15:47,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, 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} [2023-08-31 01:15:47,213 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-31 01:15:47,213 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-08-31 01:15:47,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 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) [2023-08-31 01:15:47,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-31 01:15:47,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-31 01:15:47,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-31 01:15:47,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-31 01:15:47,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 01:15:47,217 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-08-31 01:15:47,220 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 01:15:47,220 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 01:15:47,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 01:15:47 BasicIcfg [2023-08-31 01:15:47,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 01:15:47,223 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 01:15:47,223 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 01:15:47,223 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 01:15:47,224 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:15:26" (3/4) ... [2023-08-31 01:15:47,226 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 01:15:47,231 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-31 01:15:47,231 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-31 01:15:47,231 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-31 01:15:47,235 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-31 01:15:47,235 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 01:15:47,235 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-31 01:15:47,235 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 01:15:47,276 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 01:15:47,279 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 01:15:47,279 INFO L158 Benchmark]: Toolchain (without parser) took 21312.52ms. Allocated memory was 75.5MB in the beginning and 352.3MB in the end (delta: 276.8MB). Free memory was 43.3MB in the beginning and 166.0MB in the end (delta: -122.6MB). Peak memory consumption was 154.0MB. Max. memory is 16.1GB. [2023-08-31 01:15:47,280 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 54.5MB. Free memory is still 32.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 01:15:47,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.15ms. Allocated memory is still 75.5MB. Free memory was 43.2MB in the beginning and 50.9MB in the end (delta: -7.7MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2023-08-31 01:15:47,280 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.53ms. Allocated memory is still 75.5MB. Free memory was 50.9MB in the beginning and 48.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 01:15:47,281 INFO L158 Benchmark]: Boogie Preprocessor took 53.00ms. Allocated memory is still 75.5MB. Free memory was 48.6MB in the beginning and 47.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 01:15:47,281 INFO L158 Benchmark]: RCFGBuilder took 552.42ms. Allocated memory is still 75.5MB. Free memory was 47.0MB in the beginning and 52.8MB in the end (delta: -5.8MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2023-08-31 01:15:47,281 INFO L158 Benchmark]: TraceAbstraction took 20330.62ms. Allocated memory was 75.5MB in the beginning and 352.3MB in the end (delta: 276.8MB). Free memory was 51.9MB in the beginning and 169.1MB in the end (delta: -117.2MB). Peak memory consumption was 158.9MB. Max. memory is 16.1GB. [2023-08-31 01:15:47,281 INFO L158 Benchmark]: Witness Printer took 55.94ms. Allocated memory is still 352.3MB. Free memory was 169.1MB in the beginning and 166.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 01:15:47,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 54.5MB. Free memory is still 32.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.15ms. Allocated memory is still 75.5MB. Free memory was 43.2MB in the beginning and 50.9MB in the end (delta: -7.7MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.53ms. Allocated memory is still 75.5MB. Free memory was 50.9MB in the beginning and 48.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.00ms. Allocated memory is still 75.5MB. Free memory was 48.6MB in the beginning and 47.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 552.42ms. Allocated memory is still 75.5MB. Free memory was 47.0MB in the beginning and 52.8MB in the end (delta: -5.8MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. * TraceAbstraction took 20330.62ms. Allocated memory was 75.5MB in the beginning and 352.3MB in the end (delta: 276.8MB). Free memory was 51.9MB in the beginning and 169.1MB in the end (delta: -117.2MB). Peak memory consumption was 158.9MB. Max. memory is 16.1GB. * Witness Printer took 55.94ms. Allocated memory is still 352.3MB. Free memory was 169.1MB in the beginning and 166.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.1s, 193 PlacesBefore, 26 PlacesAfterwards, 200 TransitionsBefore, 16 TransitionsAfterwards, 11934 CoEnabledTransitionPairs, 8 FixpointIterations, 55 TrivialSequentialCompositions, 114 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 54 ConcurrentYvCompositions, 17 ChoiceCompositions, 246 TotalNumberOfCompositions, 11598 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11598, independent: 11598, independent conditional: 0, independent unconditional: 11598, 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: 7460, independent: 7460, independent conditional: 0, independent unconditional: 7460, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11598, independent: 4138, independent conditional: 0, independent unconditional: 4138, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 7460, unknown conditional: 0, unknown unconditional: 7460] , 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: 81]: 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, 305 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: 20.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 955 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 638 mSDsluCounter, 237 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 155 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1388 IncrementalHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 82 mSDtfsCounter, 1388 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, 2.6s 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, 0.4s SatisfiabilityAnalysisTime, 9.3s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 4145 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! [2023-08-31 01:15:47,303 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