./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:54:59,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:54:59,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:54:59,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:54:59,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:54:59,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:54:59,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:54:59,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:54:59,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:54:59,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:54:59,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:54:59,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:54:59,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:54:59,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:54:59,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:54:59,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:54:59,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:54:59,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:54:59,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:54:59,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:54:59,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:54:59,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:54:59,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:54:59,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:54:59,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:54:59,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:54:59,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:54:59,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:54:59,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:54:59,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:54:59,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:54:59,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:54:59,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:54:59,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:54:59,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:54:59,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:54:59,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:54:59,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:54:59,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:54:59,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:54:59,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:54:59,365 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:54:59,402 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:54:59,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:54:59,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:54:59,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:54:59,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:54:59,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:54:59,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:54:59,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:54:59,405 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:54:59,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:54:59,407 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:54:59,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:54:59,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:54:59,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:54:59,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:54:59,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:54:59,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:54:59,408 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:54:59,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:54:59,408 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:54:59,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:54:59,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:54:59,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:54:59,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:54:59,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:54:59,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:54:59,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:54:59,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:54:59,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:54:59,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:54:59,410 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:54:59,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:54:59,411 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:54:59,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:54:59,411 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:54:59,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:54:59,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:54:59,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:54:59,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:54:59,753 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:54:59,754 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:54:59,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.i [2023-08-30 16:55:00,916 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:55:01,139 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:55:01,140 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.i [2023-08-30 16:55:01,150 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/181e5a677/42e7f661f22d40a5a0814243d33b157b/FLAGeb3e41227 [2023-08-30 16:55:01,164 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/181e5a677/42e7f661f22d40a5a0814243d33b157b [2023-08-30 16:55:01,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:55:01,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:55:01,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:55:01,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:55:01,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:55:01,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:55:01" (1/1) ... [2023-08-30 16:55:01,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d1f5b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:01, skipping insertion in model container [2023-08-30 16:55:01,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:55:01" (1/1) ... [2023-08-30 16:55:01,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:55:01,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:55:01,375 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.i[945,958] [2023-08-30 16:55:01,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:55:01,492 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:55:01,502 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.i[945,958] [2023-08-30 16:55:01,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:55:01,566 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:55:01,567 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:55:01,572 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:55:01,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:01 WrapperNode [2023-08-30 16:55:01,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:55:01,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:55:01,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:55:01,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:55:01,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:01" (1/1) ... [2023-08-30 16:55:01,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:01" (1/1) ... [2023-08-30 16:55:01,639 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-30 16:55:01,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:55:01,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:55:01,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:55:01,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:55:01,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:01" (1/1) ... [2023-08-30 16:55:01,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:01" (1/1) ... [2023-08-30 16:55:01,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:01" (1/1) ... [2023-08-30 16:55:01,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:01" (1/1) ... [2023-08-30 16:55:01,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:01" (1/1) ... [2023-08-30 16:55:01,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:01" (1/1) ... [2023-08-30 16:55:01,670 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:01" (1/1) ... [2023-08-30 16:55:01,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:01" (1/1) ... [2023-08-30 16:55:01,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:55:01,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:55:01,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:55:01,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:55:01,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:01" (1/1) ... [2023-08-30 16:55:01,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:55:01,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:55:01,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 16:55:01,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 16:55:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:55:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:55:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:55:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:55:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:55:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 16:55:01,751 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 16:55:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 16:55:01,751 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 16:55:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 16:55:01,751 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 16:55:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:55:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:55:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:55:01,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:55:01,752 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 16:55:01,886 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:55:01,888 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:55:02,135 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:55:02,147 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:55:02,148 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:55:02,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:55:02 BoogieIcfgContainer [2023-08-30 16:55:02,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:55:02,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:55:02,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:55:02,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:55:02,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:55:01" (1/3) ... [2023-08-30 16:55:02,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415672ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:55:02, skipping insertion in model container [2023-08-30 16:55:02,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:01" (2/3) ... [2023-08-30 16:55:02,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415672ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:55:02, skipping insertion in model container [2023-08-30 16:55:02,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:55:02" (3/3) ... [2023-08-30 16:55:02,159 INFO L112 eAbstractionObserver]: Analyzing ICFG safe003_tso.i [2023-08-30 16:55:02,166 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:55:02,176 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:55:02,176 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 16:55:02,176 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:55:02,270 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 16:55:02,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-08-30 16:55:02,369 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2023-08-30 16:55:02,372 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:55:02,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-30 16:55:02,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-08-30 16:55:02,382 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-08-30 16:55:02,386 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:55:02,403 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-30 16:55:02,410 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-30 16:55:02,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-08-30 16:55:02,442 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2023-08-30 16:55:02,443 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:55:02,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-30 16:55:02,446 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-30 16:55:04,390 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-08-30 16:55:04,391 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-08-30 16:55:04,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:55:04,409 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;@4ccb17c5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:55:04,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 16:55:04,414 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-30 16:55:04,415 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:55:04,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:55:04,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:55:04,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:55:04,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:55:04,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1940031658, now seen corresponding path program 1 times [2023-08-30 16:55:04,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:55:04,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306062279] [2023-08-30 16:55:04,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:55:04,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:55:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:55:05,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:55:05,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:55:05,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306062279] [2023-08-30 16:55:05,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306062279] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:55:05,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:55:05,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:55:05,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177701018] [2023-08-30 16:55:05,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:55:05,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:55:05,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:55:05,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:55:05,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:55:05,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 16:55:05,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:05,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:55:05,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 16:55:05,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:55:05,325 INFO L130 PetriNetUnfolder]: 416/720 cut-off events. [2023-08-30 16:55:05,325 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 16:55:05,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 720 events. 416/720 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3589 event pairs, 159 based on Foata normal form. 43/763 useless extension candidates. Maximal degree in co-relation 1442. Up to 362 conditions per place. [2023-08-30 16:55:05,335 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-08-30 16:55:05,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 133 flow [2023-08-30 16:55:05,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:55:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:55:05,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-08-30 16:55:05,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2023-08-30 16:55:05,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-08-30 16:55:05,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-08-30 16:55:05,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:55:05,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-08-30 16:55:05,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:05,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:05,368 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:05,370 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 240 transitions. [2023-08-30 16:55:05,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 133 flow [2023-08-30 16:55:05,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 16:55:05,374 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-08-30 16:55:05,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-30 16:55:05,378 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-30 16:55:05,378 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-08-30 16:55:05,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:05,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:55:05,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:55:05,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:55:05,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:55:05,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:55:05,381 INFO L85 PathProgramCache]: Analyzing trace with hash 11438640, now seen corresponding path program 1 times [2023-08-30 16:55:05,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:55:05,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917136394] [2023-08-30 16:55:05,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:55:05,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:55:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:55:05,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:55:05,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:55:05,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917136394] [2023-08-30 16:55:05,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917136394] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:55:05,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:55:05,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:55:05,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659070895] [2023-08-30 16:55:05,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:55:05,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:55:05,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:55:05,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:55:05,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:55:05,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 16:55:05,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:05,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:55:05,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 16:55:05,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:55:05,692 INFO L130 PetriNetUnfolder]: 391/674 cut-off events. [2023-08-30 16:55:05,692 INFO L131 PetriNetUnfolder]: For 231/231 co-relation queries the response was YES. [2023-08-30 16:55:05,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1837 conditions, 674 events. 391/674 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3303 event pairs, 51 based on Foata normal form. 8/681 useless extension candidates. Maximal degree in co-relation 1825. Up to 307 conditions per place. [2023-08-30 16:55:05,697 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 30 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-08-30 16:55:05,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 212 flow [2023-08-30 16:55:05,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:55:05,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:55:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-08-30 16:55:05,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2023-08-30 16:55:05,702 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-08-30 16:55:05,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-08-30 16:55:05,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:55:05,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-08-30 16:55:05,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:05,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:05,708 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:05,708 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 315 transitions. [2023-08-30 16:55:05,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 212 flow [2023-08-30 16:55:05,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:55:05,714 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 122 flow [2023-08-30 16:55:05,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-08-30 16:55:05,714 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-30 16:55:05,715 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 122 flow [2023-08-30 16:55:05,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:05,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:55:05,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:55:05,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:55:05,716 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:55:05,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:55:05,716 INFO L85 PathProgramCache]: Analyzing trace with hash 11438609, now seen corresponding path program 1 times [2023-08-30 16:55:05,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:55:05,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312614561] [2023-08-30 16:55:05,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:55:05,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:55:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:55:05,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:55:05,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:55:05,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312614561] [2023-08-30 16:55:05,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312614561] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:55:05,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:55:05,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:55:05,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970478997] [2023-08-30 16:55:05,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:55:05,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:55:05,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:55:05,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:55:05,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:55:05,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 141 [2023-08-30 16:55:05,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:05,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:55:05,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 141 [2023-08-30 16:55:05,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:55:05,977 INFO L130 PetriNetUnfolder]: 432/777 cut-off events. [2023-08-30 16:55:05,977 INFO L131 PetriNetUnfolder]: For 760/774 co-relation queries the response was YES. [2023-08-30 16:55:05,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2149 conditions, 777 events. 432/777 cut-off events. For 760/774 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4122 event pairs, 93 based on Foata normal form. 48/822 useless extension candidates. Maximal degree in co-relation 2134. Up to 304 conditions per place. [2023-08-30 16:55:05,983 INFO L137 encePairwiseOnDemand]: 137/141 looper letters, 27 selfloop transitions, 4 changer transitions 9/45 dead transitions. [2023-08-30 16:55:05,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 280 flow [2023-08-30 16:55:05,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:55:05,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:55:05,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2023-08-30 16:55:05,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904255319148937 [2023-08-30 16:55:05,986 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 333 transitions. [2023-08-30 16:55:05,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 333 transitions. [2023-08-30 16:55:05,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:55:05,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 333 transitions. [2023-08-30 16:55:05,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:05,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:05,988 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:05,989 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 122 flow. Second operand 4 states and 333 transitions. [2023-08-30 16:55:05,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 280 flow [2023-08-30 16:55:05,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:55:05,993 INFO L231 Difference]: Finished difference. Result has 36 places, 23 transitions, 124 flow [2023-08-30 16:55:05,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2023-08-30 16:55:05,995 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-08-30 16:55:05,998 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 124 flow [2023-08-30 16:55:05,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:05,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:55:05,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:55:05,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:55:05,999 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:55:05,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:55:06,000 INFO L85 PathProgramCache]: Analyzing trace with hash -285317927, now seen corresponding path program 1 times [2023-08-30 16:55:06,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:55:06,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894434650] [2023-08-30 16:55:06,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:55:06,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:55:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:55:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:55:06,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:55:06,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894434650] [2023-08-30 16:55:06,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894434650] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:55:06,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:55:06,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:55:06,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002595238] [2023-08-30 16:55:06,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:55:06,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:55:06,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:55:06,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:55:06,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:55:06,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 141 [2023-08-30 16:55:06,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 23 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:06,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:55:06,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 141 [2023-08-30 16:55:06,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:55:06,229 INFO L130 PetriNetUnfolder]: 167/304 cut-off events. [2023-08-30 16:55:06,230 INFO L131 PetriNetUnfolder]: For 261/266 co-relation queries the response was YES. [2023-08-30 16:55:06,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 304 events. 167/304 cut-off events. For 261/266 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1137 event pairs, 73 based on Foata normal form. 6/307 useless extension candidates. Maximal degree in co-relation 940. Up to 147 conditions per place. [2023-08-30 16:55:06,232 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 18 selfloop transitions, 3 changer transitions 6/29 dead transitions. [2023-08-30 16:55:06,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 208 flow [2023-08-30 16:55:06,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:55:06,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:55:06,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2023-08-30 16:55:06,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5957446808510638 [2023-08-30 16:55:06,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 252 transitions. [2023-08-30 16:55:06,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 252 transitions. [2023-08-30 16:55:06,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:55:06,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 252 transitions. [2023-08-30 16:55:06,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:06,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:06,238 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:06,238 INFO L175 Difference]: Start difference. First operand has 36 places, 23 transitions, 124 flow. Second operand 3 states and 252 transitions. [2023-08-30 16:55:06,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 208 flow [2023-08-30 16:55:06,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 183 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-30 16:55:06,243 INFO L231 Difference]: Finished difference. Result has 34 places, 20 transitions, 98 flow [2023-08-30 16:55:06,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2023-08-30 16:55:06,244 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-08-30 16:55:06,244 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 98 flow [2023-08-30 16:55:06,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:06,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:55:06,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:55:06,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:55:06,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:55:06,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:55:06,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1849809243, now seen corresponding path program 1 times [2023-08-30 16:55:06,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:55:06,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420977917] [2023-08-30 16:55:06,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:55:06,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:55:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:55:06,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:55:06,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:55:06,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420977917] [2023-08-30 16:55:06,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420977917] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:55:06,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:55:06,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:55:06,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169251699] [2023-08-30 16:55:06,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:55:06,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:55:06,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:55:06,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:55:06,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:55:06,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 16:55:06,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:06,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:55:06,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 16:55:06,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:55:06,569 INFO L130 PetriNetUnfolder]: 185/342 cut-off events. [2023-08-30 16:55:06,569 INFO L131 PetriNetUnfolder]: For 216/216 co-relation queries the response was YES. [2023-08-30 16:55:06,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 342 events. 185/342 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1323 event pairs, 71 based on Foata normal form. 4/346 useless extension candidates. Maximal degree in co-relation 996. Up to 140 conditions per place. [2023-08-30 16:55:06,571 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 16 selfloop transitions, 3 changer transitions 19/39 dead transitions. [2023-08-30 16:55:06,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 39 transitions, 232 flow [2023-08-30 16:55:06,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:55:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:55:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 529 transitions. [2023-08-30 16:55:06,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53596757852077 [2023-08-30 16:55:06,573 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 529 transitions. [2023-08-30 16:55:06,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 529 transitions. [2023-08-30 16:55:06,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:55:06,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 529 transitions. [2023-08-30 16:55:06,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:06,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:06,577 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:06,577 INFO L175 Difference]: Start difference. First operand has 34 places, 20 transitions, 98 flow. Second operand 7 states and 529 transitions. [2023-08-30 16:55:06,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 39 transitions, 232 flow [2023-08-30 16:55:06,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 39 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 16:55:06,579 INFO L231 Difference]: Finished difference. Result has 39 places, 17 transitions, 78 flow [2023-08-30 16:55:06,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=78, PETRI_PLACES=39, PETRI_TRANSITIONS=17} [2023-08-30 16:55:06,580 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-08-30 16:55:06,580 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 17 transitions, 78 flow [2023-08-30 16:55:06,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:06,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:55:06,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:55:06,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 16:55:06,582 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:55:06,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:55:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1817634963, now seen corresponding path program 2 times [2023-08-30 16:55:06,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:55:06,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192107383] [2023-08-30 16:55:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:55:06,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:55:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:55:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:55:06,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:55:06,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192107383] [2023-08-30 16:55:06,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192107383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:55:06,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:55:06,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:55:06,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224656118] [2023-08-30 16:55:06,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:55:06,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:55:06,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:55:06,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:55:06,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:55:06,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 16:55:06,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 17 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:06,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:55:06,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 16:55:06,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:55:06,779 INFO L130 PetriNetUnfolder]: 133/258 cut-off events. [2023-08-30 16:55:06,780 INFO L131 PetriNetUnfolder]: For 179/179 co-relation queries the response was YES. [2023-08-30 16:55:06,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 258 events. 133/258 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 931 event pairs, 33 based on Foata normal form. 4/262 useless extension candidates. Maximal degree in co-relation 729. Up to 190 conditions per place. [2023-08-30 16:55:06,781 INFO L137 encePairwiseOnDemand]: 137/141 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-08-30 16:55:06,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 28 transitions, 157 flow [2023-08-30 16:55:06,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:55:06,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:55:06,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 378 transitions. [2023-08-30 16:55:06,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2023-08-30 16:55:06,783 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 378 transitions. [2023-08-30 16:55:06,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 378 transitions. [2023-08-30 16:55:06,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:55:06,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 378 transitions. [2023-08-30 16:55:06,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:06,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:06,786 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:06,786 INFO L175 Difference]: Start difference. First operand has 39 places, 17 transitions, 78 flow. Second operand 5 states and 378 transitions. [2023-08-30 16:55:06,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 28 transitions, 157 flow [2023-08-30 16:55:06,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 134 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-08-30 16:55:06,788 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-08-30 16:55:06,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-08-30 16:55:06,792 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-08-30 16:55:06,792 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-08-30 16:55:06,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:55:06,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 16:55:06,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-30 16:55:06,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 16:55:06,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 16:55:06,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 16:55:06,796 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-08-30 16:55:06,798 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:55:06,798 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:55:06,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:55:06 BasicIcfg [2023-08-30 16:55:06,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:55:06,802 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:55:06,802 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:55:06,802 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:55:06,803 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:55:02" (3/4) ... [2023-08-30 16:55:06,805 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 16:55:06,810 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 16:55:06,810 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 16:55:06,811 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-30 16:55:06,815 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-30 16:55:06,816 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 16:55:06,816 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 16:55:06,816 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:55:06,846 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:55:06,848 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:55:06,849 INFO L158 Benchmark]: Toolchain (without parser) took 5681.54ms. Allocated memory was 65.0MB in the beginning and 117.4MB in the end (delta: 52.4MB). Free memory was 32.8MB in the beginning and 45.2MB in the end (delta: -12.5MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. [2023-08-30 16:55:06,849 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 52.4MB. Free memory is still 29.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:55:06,849 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.09ms. Allocated memory is still 65.0MB. Free memory was 32.6MB in the beginning and 28.1MB in the end (delta: 4.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2023-08-30 16:55:06,850 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.55ms. Allocated memory is still 65.0MB. Free memory was 27.9MB in the beginning and 43.8MB in the end (delta: -15.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 16:55:06,850 INFO L158 Benchmark]: Boogie Preprocessor took 41.39ms. Allocated memory is still 65.0MB. Free memory was 43.8MB in the beginning and 42.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:55:06,850 INFO L158 Benchmark]: RCFGBuilder took 467.95ms. Allocated memory is still 65.0MB. Free memory was 42.3MB in the beginning and 28.8MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 16:55:06,850 INFO L158 Benchmark]: TraceAbstraction took 4648.28ms. Allocated memory was 65.0MB in the beginning and 117.4MB in the end (delta: 52.4MB). Free memory was 28.2MB in the beginning and 48.4MB in the end (delta: -20.1MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. [2023-08-30 16:55:06,851 INFO L158 Benchmark]: Witness Printer took 45.97ms. Allocated memory is still 117.4MB. Free memory was 48.4MB in the beginning and 45.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:55:06,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 52.4MB. Free memory is still 29.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 405.09ms. Allocated memory is still 65.0MB. Free memory was 32.6MB in the beginning and 28.1MB in the end (delta: 4.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.55ms. Allocated memory is still 65.0MB. Free memory was 27.9MB in the beginning and 43.8MB in the end (delta: -15.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.39ms. Allocated memory is still 65.0MB. Free memory was 43.8MB in the beginning and 42.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 467.95ms. Allocated memory is still 65.0MB. Free memory was 42.3MB in the beginning and 28.8MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4648.28ms. Allocated memory was 65.0MB in the beginning and 117.4MB in the end (delta: 52.4MB). Free memory was 28.2MB in the beginning and 48.4MB in the end (delta: -20.1MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. * Witness Printer took 45.97ms. Allocated memory is still 117.4MB. Free memory was 48.4MB in the beginning and 45.2MB 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: 2.0s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1193, independent: 1116, independent conditional: 0, independent unconditional: 1116, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 573, independent: 549, independent conditional: 0, independent unconditional: 549, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1193, independent: 567, independent conditional: 0, independent unconditional: 567, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 573, unknown conditional: 0, unknown unconditional: 573] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 183 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 126 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 278 IncrementalHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 28 mSDtfsCounter, 278 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=3, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 295 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 16:55:06,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE