./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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 ../sv-benchmarks/c/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.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 6d67b26c9d6dbfd265b32dfe97063f0b6065a61c5709b8120357b3eaad40bf46 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:43:20,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:43:20,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:43:20,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:43:20,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:43:20,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:43:20,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:43:20,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:43:20,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:43:20,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:43:20,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:43:20,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:43:20,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:43:20,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:43:20,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:43:20,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:43:20,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:43:20,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:43:20,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:43:20,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:43:20,320 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:43:20,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:43:20,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:43:20,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:43:20,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:43:20,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:43:20,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:43:20,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:43:20,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:43:20,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:43:20,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:43:20,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:43:20,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:43:20,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:43:20,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:43:20,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:43:20,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:43:20,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:43:20,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:43:20,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:43:20,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:43:20,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:43:20,343 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:43:20,366 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:43:20,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:43:20,367 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:43:20,367 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:43:20,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:43:20,368 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:43:20,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:43:20,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:43:20,368 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:43:20,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:43:20,369 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:43:20,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:43:20,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:43:20,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:43:20,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:43:20,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:43:20,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:43:20,375 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:43:20,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:43:20,375 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:43:20,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:43:20,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:43:20,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:43:20,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:43:20,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:43:20,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:43:20,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:43:20,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:43:20,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:43:20,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:43:20,377 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:43:20,378 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:43:20,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:43:20,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d67b26c9d6dbfd265b32dfe97063f0b6065a61c5709b8120357b3eaad40bf46 [2022-07-21 08:43:20,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:43:20,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:43:20,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:43:20,648 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:43:20,649 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:43:20,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-21 08:43:20,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b62dba363/46aac5b6d1fe4a378330bc0e571ef78b/FLAG61dea4d1e [2022-07-21 08:43:21,228 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:43:21,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-21 08:43:21,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b62dba363/46aac5b6d1fe4a378330bc0e571ef78b/FLAG61dea4d1e [2022-07-21 08:43:21,706 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b62dba363/46aac5b6d1fe4a378330bc0e571ef78b [2022-07-21 08:43:21,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:43:21,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:43:21,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:43:21,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:43:21,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:43:21,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:43:21" (1/1) ... [2022-07-21 08:43:21,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4abf9f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:21, skipping insertion in model container [2022-07-21 08:43:21,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:43:21" (1/1) ... [2022-07-21 08:43:21,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:43:21,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:43:21,898 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-21 08:43:22,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:43:22,072 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:43:22,085 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-21 08:43:22,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:43:22,177 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:43:22,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:22 WrapperNode [2022-07-21 08:43:22,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:43:22,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:43:22,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:43:22,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:43:22,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:22" (1/1) ... [2022-07-21 08:43:22,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:22" (1/1) ... [2022-07-21 08:43:22,233 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-07-21 08:43:22,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:43:22,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:43:22,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:43:22,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:43:22,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:22" (1/1) ... [2022-07-21 08:43:22,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:22" (1/1) ... [2022-07-21 08:43:22,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:22" (1/1) ... [2022-07-21 08:43:22,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:22" (1/1) ... [2022-07-21 08:43:22,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:22" (1/1) ... [2022-07-21 08:43:22,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:22" (1/1) ... [2022-07-21 08:43:22,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:22" (1/1) ... [2022-07-21 08:43:22,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:43:22,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:43:22,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:43:22,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:43:22,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:22" (1/1) ... [2022-07-21 08:43:22,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:43:22,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:43:22,292 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) [2022-07-21 08:43:22,318 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 [2022-07-21 08:43:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:43:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 08:43:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:43:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:43:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:43:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-21 08:43:22,335 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-21 08:43:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-21 08:43:22,335 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-21 08:43:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-21 08:43:22,336 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-21 08:43:22,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:43:22,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 08:43:22,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:43:22,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:43:22,337 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:43:22,454 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:43:22,472 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:43:22,627 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:43:22,633 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:43:22,633 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:43:22,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:43:22 BoogieIcfgContainer [2022-07-21 08:43:22,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:43:22,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:43:22,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:43:22,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:43:22,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:43:21" (1/3) ... [2022-07-21 08:43:22,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7aa5aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:43:22, skipping insertion in model container [2022-07-21 08:43:22,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:22" (2/3) ... [2022-07-21 08:43:22,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7aa5aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:43:22, skipping insertion in model container [2022-07-21 08:43:22,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:43:22" (3/3) ... [2022-07-21 08:43:22,642 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-21 08:43:22,646 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:43:22,654 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:43:22,654 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:43:22,654 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:43:22,691 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:43:22,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-07-21 08:43:22,764 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2022-07-21 08:43:22,764 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:43:22,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-07-21 08:43:22,768 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-07-21 08:43:22,771 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-07-21 08:43:22,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:43:22,787 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3bf4138, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@394537eb [2022-07-21 08:43:22,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 08:43:22,822 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2022-07-21 08:43:22,822 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:43:22,823 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:22,823 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:22,824 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)] === [2022-07-21 08:43:22,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:22,829 INFO L85 PathProgramCache]: Analyzing trace with hash -669003802, now seen corresponding path program 1 times [2022-07-21 08:43:22,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:22,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806071022] [2022-07-21 08:43:22,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:22,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:23,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:23,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806071022] [2022-07-21 08:43:23,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806071022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:23,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:23,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:43:23,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740276999] [2022-07-21 08:43:23,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:23,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:43:23,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:23,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:43:23,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:43:23,411 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-21 08:43:23,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 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) [2022-07-21 08:43:23,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:23,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-21 08:43:23,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:23,814 INFO L129 PetriNetUnfolder]: 312/782 cut-off events. [2022-07-21 08:43:23,814 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-21 08:43:23,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1343 conditions, 782 events. 312/782 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4210 event pairs, 16 based on Foata normal form. 34/792 useless extension candidates. Maximal degree in co-relation 1305. Up to 154 conditions per place. [2022-07-21 08:43:23,825 INFO L132 encePairwiseOnDemand]: 80/92 looper letters, 24 selfloop transitions, 7 changer transitions 47/134 dead transitions. [2022-07-21 08:43:23,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 134 transitions, 439 flow [2022-07-21 08:43:23,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:43:23,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:43:23,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 994 transitions. [2022-07-21 08:43:23,846 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8311036789297659 [2022-07-21 08:43:23,847 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 994 transitions. [2022-07-21 08:43:23,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 994 transitions. [2022-07-21 08:43:23,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:23,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 994 transitions. [2022-07-21 08:43:23,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.46153846153847) internal successors, (994), 13 states have internal predecessors, (994), 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) [2022-07-21 08:43:23,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-07-21 08:43:23,879 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-07-21 08:43:23,881 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 13 states and 994 transitions. [2022-07-21 08:43:23,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 134 transitions, 439 flow [2022-07-21 08:43:23,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 134 transitions, 434 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-21 08:43:23,896 INFO L242 Difference]: Finished difference. Result has 105 places, 78 transitions, 244 flow [2022-07-21 08:43:23,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=244, PETRI_PLACES=105, PETRI_TRANSITIONS=78} [2022-07-21 08:43:23,901 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2022-07-21 08:43:23,902 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 78 transitions, 244 flow [2022-07-21 08:43:23,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 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) [2022-07-21 08:43:23,902 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:23,903 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:23,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:43:23,903 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)] === [2022-07-21 08:43:23,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:23,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1483724411, now seen corresponding path program 1 times [2022-07-21 08:43:23,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:23,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004160341] [2022-07-21 08:43:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:23,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:24,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:24,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004160341] [2022-07-21 08:43:24,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004160341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:24,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:24,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:43:24,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013856652] [2022-07-21 08:43:24,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:24,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:43:24,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:24,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:43:24,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:43:24,093 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2022-07-21 08:43:24,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 78 transitions, 244 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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) [2022-07-21 08:43:24,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:24,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2022-07-21 08:43:24,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:24,543 INFO L129 PetriNetUnfolder]: 464/1151 cut-off events. [2022-07-21 08:43:24,543 INFO L130 PetriNetUnfolder]: For 2405/2951 co-relation queries the response was YES. [2022-07-21 08:43:24,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3599 conditions, 1151 events. 464/1151 cut-off events. For 2405/2951 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7069 event pairs, 22 based on Foata normal form. 36/1159 useless extension candidates. Maximal degree in co-relation 3547. Up to 229 conditions per place. [2022-07-21 08:43:24,554 INFO L132 encePairwiseOnDemand]: 80/92 looper letters, 43 selfloop transitions, 18 changer transitions 83/198 dead transitions. [2022-07-21 08:43:24,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 198 transitions, 1372 flow [2022-07-21 08:43:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:43:24,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 08:43:24,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1274 transitions. [2022-07-21 08:43:24,559 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8145780051150895 [2022-07-21 08:43:24,559 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1274 transitions. [2022-07-21 08:43:24,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1274 transitions. [2022-07-21 08:43:24,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:24,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1274 transitions. [2022-07-21 08:43:24,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 74.94117647058823) internal successors, (1274), 17 states have internal predecessors, (1274), 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) [2022-07-21 08:43:24,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 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) [2022-07-21 08:43:24,567 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 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) [2022-07-21 08:43:24,567 INFO L186 Difference]: Start difference. First operand has 105 places, 78 transitions, 244 flow. Second operand 17 states and 1274 transitions. [2022-07-21 08:43:24,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 198 transitions, 1372 flow [2022-07-21 08:43:24,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 198 transitions, 1327 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-07-21 08:43:24,579 INFO L242 Difference]: Finished difference. Result has 124 places, 91 transitions, 492 flow [2022-07-21 08:43:24,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=492, PETRI_PLACES=124, PETRI_TRANSITIONS=91} [2022-07-21 08:43:24,580 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 40 predicate places. [2022-07-21 08:43:24,580 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 91 transitions, 492 flow [2022-07-21 08:43:24,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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) [2022-07-21 08:43:24,581 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:24,581 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:24,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:43:24,581 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)] === [2022-07-21 08:43:24,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:24,582 INFO L85 PathProgramCache]: Analyzing trace with hash 957894116, now seen corresponding path program 1 times [2022-07-21 08:43:24,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:24,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359636885] [2022-07-21 08:43:24,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:24,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:24,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:24,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359636885] [2022-07-21 08:43:24,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359636885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:24,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:24,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:43:24,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344130167] [2022-07-21 08:43:24,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:24,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:43:24,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:24,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:43:24,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:43:24,728 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-21 08:43:24,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 91 transitions, 492 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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) [2022-07-21 08:43:24,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:24,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-21 08:43:24,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:25,006 INFO L129 PetriNetUnfolder]: 177/670 cut-off events. [2022-07-21 08:43:25,006 INFO L130 PetriNetUnfolder]: For 4327/5467 co-relation queries the response was YES. [2022-07-21 08:43:25,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2732 conditions, 670 events. 177/670 cut-off events. For 4327/5467 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4108 event pairs, 12 based on Foata normal form. 23/676 useless extension candidates. Maximal degree in co-relation 2665. Up to 107 conditions per place. [2022-07-21 08:43:25,016 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 39 selfloop transitions, 30 changer transitions 33/159 dead transitions. [2022-07-21 08:43:25,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 159 transitions, 1462 flow [2022-07-21 08:43:25,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:43:25,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:43:25,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 973 transitions. [2022-07-21 08:43:25,020 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8135451505016722 [2022-07-21 08:43:25,021 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 973 transitions. [2022-07-21 08:43:25,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 973 transitions. [2022-07-21 08:43:25,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:25,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 973 transitions. [2022-07-21 08:43:25,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.84615384615384) internal successors, (973), 13 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:25,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-07-21 08:43:25,027 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-07-21 08:43:25,027 INFO L186 Difference]: Start difference. First operand has 124 places, 91 transitions, 492 flow. Second operand 13 states and 973 transitions. [2022-07-21 08:43:25,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 159 transitions, 1462 flow [2022-07-21 08:43:25,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 159 transitions, 1282 flow, removed 90 selfloop flow, removed 9 redundant places. [2022-07-21 08:43:25,045 INFO L242 Difference]: Finished difference. Result has 127 places, 111 transitions, 792 flow [2022-07-21 08:43:25,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=792, PETRI_PLACES=127, PETRI_TRANSITIONS=111} [2022-07-21 08:43:25,047 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 43 predicate places. [2022-07-21 08:43:25,048 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 111 transitions, 792 flow [2022-07-21 08:43:25,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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) [2022-07-21 08:43:25,048 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:25,048 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:25,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:43:25,049 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)] === [2022-07-21 08:43:25,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:25,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1243597316, now seen corresponding path program 1 times [2022-07-21 08:43:25,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:25,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730038961] [2022-07-21 08:43:25,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:25,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:25,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:25,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730038961] [2022-07-21 08:43:25,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730038961] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:25,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:25,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:43:25,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967412336] [2022-07-21 08:43:25,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:25,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:43:25,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:25,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:43:25,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:43:25,214 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2022-07-21 08:43:25,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 111 transitions, 792 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 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) [2022-07-21 08:43:25,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:25,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2022-07-21 08:43:25,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:25,460 INFO L129 PetriNetUnfolder]: 174/645 cut-off events. [2022-07-21 08:43:25,460 INFO L130 PetriNetUnfolder]: For 4139/5914 co-relation queries the response was YES. [2022-07-21 08:43:25,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2708 conditions, 645 events. 174/645 cut-off events. For 4139/5914 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3826 event pairs, 14 based on Foata normal form. 21/641 useless extension candidates. Maximal degree in co-relation 2644. Up to 112 conditions per place. [2022-07-21 08:43:25,467 INFO L132 encePairwiseOnDemand]: 80/92 looper letters, 31 selfloop transitions, 12 changer transitions 106/203 dead transitions. [2022-07-21 08:43:25,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 203 transitions, 2231 flow [2022-07-21 08:43:25,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:43:25,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:43:25,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 820 transitions. [2022-07-21 08:43:25,470 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8102766798418972 [2022-07-21 08:43:25,470 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 820 transitions. [2022-07-21 08:43:25,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 820 transitions. [2022-07-21 08:43:25,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:25,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 820 transitions. [2022-07-21 08:43:25,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.54545454545455) internal successors, (820), 11 states have internal predecessors, (820), 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) [2022-07-21 08:43:25,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 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) [2022-07-21 08:43:25,480 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 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) [2022-07-21 08:43:25,480 INFO L186 Difference]: Start difference. First operand has 127 places, 111 transitions, 792 flow. Second operand 11 states and 820 transitions. [2022-07-21 08:43:25,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 203 transitions, 2231 flow [2022-07-21 08:43:25,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 203 transitions, 2031 flow, removed 100 selfloop flow, removed 6 redundant places. [2022-07-21 08:43:25,501 INFO L242 Difference]: Finished difference. Result has 136 places, 86 transitions, 466 flow [2022-07-21 08:43:25,501 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=466, PETRI_PLACES=136, PETRI_TRANSITIONS=86} [2022-07-21 08:43:25,502 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 52 predicate places. [2022-07-21 08:43:25,504 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 86 transitions, 466 flow [2022-07-21 08:43:25,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 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) [2022-07-21 08:43:25,505 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:25,505 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:25,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:43:25,505 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)] === [2022-07-21 08:43:25,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:25,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1537241365, now seen corresponding path program 1 times [2022-07-21 08:43:25,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:25,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511005337] [2022-07-21 08:43:25,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:25,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:25,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:25,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:25,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511005337] [2022-07-21 08:43:25,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511005337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:25,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:25,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:43:25,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139702844] [2022-07-21 08:43:25,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:25,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:43:25,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:25,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:43:25,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:43:25,641 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 92 [2022-07-21 08:43:25,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 86 transitions, 466 flow. Second operand has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-07-21 08:43:25,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:25,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 92 [2022-07-21 08:43:25,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:25,754 INFO L129 PetriNetUnfolder]: 14/158 cut-off events. [2022-07-21 08:43:25,754 INFO L130 PetriNetUnfolder]: For 699/892 co-relation queries the response was YES. [2022-07-21 08:43:25,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 158 events. 14/158 cut-off events. For 699/892 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 465 event pairs, 3 based on Foata normal form. 4/158 useless extension candidates. Maximal degree in co-relation 523. Up to 18 conditions per place. [2022-07-21 08:43:25,755 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 12 selfloop transitions, 4 changer transitions 22/96 dead transitions. [2022-07-21 08:43:25,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 96 transitions, 658 flow [2022-07-21 08:43:25,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:43:25,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 08:43:25,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2022-07-21 08:43:25,758 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8385093167701864 [2022-07-21 08:43:25,758 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2022-07-21 08:43:25,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2022-07-21 08:43:25,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:25,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2022-07-21 08:43:25,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 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) [2022-07-21 08:43:25,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2022-07-21 08:43:25,761 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2022-07-21 08:43:25,762 INFO L186 Difference]: Start difference. First operand has 136 places, 86 transitions, 466 flow. Second operand 7 states and 540 transitions. [2022-07-21 08:43:25,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 96 transitions, 658 flow [2022-07-21 08:43:25,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 96 transitions, 498 flow, removed 52 selfloop flow, removed 23 redundant places. [2022-07-21 08:43:25,767 INFO L242 Difference]: Finished difference. Result has 111 places, 73 transitions, 246 flow [2022-07-21 08:43:25,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=246, PETRI_PLACES=111, PETRI_TRANSITIONS=73} [2022-07-21 08:43:25,768 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 27 predicate places. [2022-07-21 08:43:25,768 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 73 transitions, 246 flow [2022-07-21 08:43:25,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-07-21 08:43:25,768 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:25,768 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:25,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:43:25,769 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)] === [2022-07-21 08:43:25,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:25,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1222029057, now seen corresponding path program 1 times [2022-07-21 08:43:25,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:25,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217651912] [2022-07-21 08:43:25,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:25,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:25,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:25,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217651912] [2022-07-21 08:43:25,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217651912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:25,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:25,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:43:25,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419609145] [2022-07-21 08:43:25,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:25,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:43:25,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:25,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:43:25,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:43:25,850 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 92 [2022-07-21 08:43:25,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 73 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 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) [2022-07-21 08:43:25,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:25,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 92 [2022-07-21 08:43:25,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:25,919 INFO L129 PetriNetUnfolder]: 3/96 cut-off events. [2022-07-21 08:43:25,920 INFO L130 PetriNetUnfolder]: For 106/108 co-relation queries the response was YES. [2022-07-21 08:43:25,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 96 events. 3/96 cut-off events. For 106/108 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 122 event pairs, 2 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 194. Up to 9 conditions per place. [2022-07-21 08:43:25,921 INFO L132 encePairwiseOnDemand]: 85/92 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2022-07-21 08:43:25,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 72 transitions, 274 flow [2022-07-21 08:43:25,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:43:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 08:43:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 527 transitions. [2022-07-21 08:43:25,923 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8183229813664596 [2022-07-21 08:43:25,923 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 527 transitions. [2022-07-21 08:43:25,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 527 transitions. [2022-07-21 08:43:25,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:25,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 527 transitions. [2022-07-21 08:43:25,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.28571428571429) internal successors, (527), 7 states have internal predecessors, (527), 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) [2022-07-21 08:43:25,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2022-07-21 08:43:25,926 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2022-07-21 08:43:25,927 INFO L186 Difference]: Start difference. First operand has 111 places, 73 transitions, 246 flow. Second operand 7 states and 527 transitions. [2022-07-21 08:43:25,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 72 transitions, 274 flow [2022-07-21 08:43:25,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 72 transitions, 210 flow, removed 8 selfloop flow, removed 18 redundant places. [2022-07-21 08:43:25,928 INFO L242 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2022-07-21 08:43:25,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2022-07-21 08:43:25,929 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 9 predicate places. [2022-07-21 08:43:25,930 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2022-07-21 08:43:25,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 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) [2022-07-21 08:43:25,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-21 08:43:25,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-21 08:43:25,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-21 08:43:25,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-21 08:43:25,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:43:25,934 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-21 08:43:25,936 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 08:43:25,936 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:43:25,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:43:25 BasicIcfg [2022-07-21 08:43:25,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:43:25,941 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:43:25,941 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:43:25,941 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:43:25,942 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:43:22" (3/4) ... [2022-07-21 08:43:25,944 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 08:43:25,949 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-21 08:43:25,949 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-21 08:43:25,949 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-21 08:43:25,953 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-21 08:43:25,953 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-21 08:43:25,953 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 08:43:25,953 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 08:43:25,979 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:43:25,980 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:43:25,980 INFO L158 Benchmark]: Toolchain (without parser) took 4270.27ms. Allocated memory was 50.3MB in the beginning and 117.4MB in the end (delta: 67.1MB). Free memory was 25.8MB in the beginning and 60.9MB in the end (delta: -35.1MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2022-07-21 08:43:25,980 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 50.3MB. Free memory is still 32.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:43:25,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 465.95ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 25.6MB in the beginning and 36.3MB in the end (delta: -10.7MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2022-07-21 08:43:25,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.44ms. Allocated memory is still 62.9MB. Free memory was 36.3MB in the beginning and 34.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:43:25,981 INFO L158 Benchmark]: Boogie Preprocessor took 24.47ms. Allocated memory is still 62.9MB. Free memory was 34.0MB in the beginning and 32.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:43:25,982 INFO L158 Benchmark]: RCFGBuilder took 375.79ms. Allocated memory is still 62.9MB. Free memory was 32.6MB in the beginning and 37.6MB in the end (delta: -4.9MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2022-07-21 08:43:25,982 INFO L158 Benchmark]: TraceAbstraction took 3304.19ms. Allocated memory was 62.9MB in the beginning and 117.4MB in the end (delta: 54.5MB). Free memory was 37.2MB in the beginning and 63.8MB in the end (delta: -26.5MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. [2022-07-21 08:43:25,982 INFO L158 Benchmark]: Witness Printer took 38.62ms. Allocated memory is still 117.4MB. Free memory was 63.8MB in the beginning and 60.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:43:25,984 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 50.3MB. Free memory is still 32.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 465.95ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 25.6MB in the beginning and 36.3MB in the end (delta: -10.7MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.44ms. Allocated memory is still 62.9MB. Free memory was 36.3MB in the beginning and 34.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.47ms. Allocated memory is still 62.9MB. Free memory was 34.0MB in the beginning and 32.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 375.79ms. Allocated memory is still 62.9MB. Free memory was 32.6MB in the beginning and 37.6MB in the end (delta: -4.9MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3304.19ms. Allocated memory was 62.9MB in the beginning and 117.4MB in the end (delta: 54.5MB). Free memory was 37.2MB in the beginning and 63.8MB in the end (delta: -26.5MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. * Witness Printer took 38.62ms. Allocated memory is still 117.4MB. Free memory was 63.8MB in the beginning and 60.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 115 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: 3.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 321 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 321 mSDsluCounter, 475 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 445 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 375 IncrementalHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 119 mSDtfsCounter, 375 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=792occurred in iteration=3, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 358 NumberOfCodeBlocks, 358 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 352 ConstructedInterpolants, 0 QuantifiedInterpolants, 1912 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! [2022-07-21 08:43:26,020 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