./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe010_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/safe010_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 0cdc4de0b080284406e5a223cc9cce4b369430ad26c4d0f5d169e90b4fc0e513 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:11:07,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:11:07,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:11:07,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:11:07,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:11:07,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:11:07,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:11:07,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:11:07,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:11:07,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:11:07,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:11:07,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:11:07,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:11:07,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:11:07,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:11:07,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:11:07,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:11:07,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:11:07,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:11:07,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:11:07,399 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:11:07,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:11:07,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:11:07,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:11:07,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:11:07,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:11:07,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:11:07,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:11:07,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:11:07,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:11:07,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:11:07,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:11:07,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:11:07,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:11:07,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:11:07,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:11:07,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:11:07,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:11:07,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:11:07,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:11:07,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:11:07,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:11:07,418 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:11:07,439 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:11:07,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:11:07,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:11:07,440 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:11:07,440 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:11:07,441 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:11:07,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:11:07,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:11:07,441 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:11:07,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:11:07,442 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:11:07,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:11:07,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:11:07,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:11:07,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:11:07,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:11:07,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:11:07,443 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:11:07,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:11:07,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:11:07,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:11:07,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:11:07,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:11:07,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:11:07,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:11:07,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:11:07,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:11:07,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:11:07,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:11:07,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:11:07,446 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:11:07,446 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:11:07,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:11:07,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cdc4de0b080284406e5a223cc9cce4b369430ad26c4d0f5d169e90b4fc0e513 [2022-07-19 21:11:07,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:11:07,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:11:07,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:11:07,650 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:11:07,650 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:11:07,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe010_tso.i [2022-07-19 21:11:07,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a5252f2c/cc65bd5bb2234621bd0cebf43066e836/FLAG6efc10e17 [2022-07-19 21:11:08,051 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:11:08,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe010_tso.i [2022-07-19 21:11:08,074 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a5252f2c/cc65bd5bb2234621bd0cebf43066e836/FLAG6efc10e17 [2022-07-19 21:11:08,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a5252f2c/cc65bd5bb2234621bd0cebf43066e836 [2022-07-19 21:11:08,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:11:08,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:11:08,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:11:08,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:11:08,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:11:08,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:08" (1/1) ... [2022-07-19 21:11:08,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c54dac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:08, skipping insertion in model container [2022-07-19 21:11:08,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:08" (1/1) ... [2022-07-19 21:11:08,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:11:08,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:11:08,328 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/safe010_tso.i[945,958] [2022-07-19 21:11:08,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:11:08,533 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:11:08,543 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/safe010_tso.i[945,958] [2022-07-19 21:11:08,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:11:08,608 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:11:08,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:08 WrapperNode [2022-07-19 21:11:08,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:11:08,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:11:08,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:11:08,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:11:08,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:08" (1/1) ... [2022-07-19 21:11:08,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:08" (1/1) ... [2022-07-19 21:11:08,642 INFO L137 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2022-07-19 21:11:08,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:11:08,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:11:08,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:11:08,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:11:08,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:08" (1/1) ... [2022-07-19 21:11:08,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:08" (1/1) ... [2022-07-19 21:11:08,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:08" (1/1) ... [2022-07-19 21:11:08,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:08" (1/1) ... [2022-07-19 21:11:08,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:08" (1/1) ... [2022-07-19 21:11:08,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:08" (1/1) ... [2022-07-19 21:11:08,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:08" (1/1) ... [2022-07-19 21:11:08,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:11:08,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:11:08,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:11:08,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:11:08,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:08" (1/1) ... [2022-07-19 21:11:08,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:11:08,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:11:08,687 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) [2022-07-19 21:11:08,689 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 [2022-07-19 21:11:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:11:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:11:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:11:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:11:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:11:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-19 21:11:08,726 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-19 21:11:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-19 21:11:08,726 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-19 21:11:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:11:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:11:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:11:08,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:11:08,727 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:11:08,854 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:11:08,856 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:11:08,994 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:11:08,999 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:11:09,000 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:11:09,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:09 BoogieIcfgContainer [2022-07-19 21:11:09,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:11:09,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:11:09,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:11:09,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:11:09,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:11:08" (1/3) ... [2022-07-19 21:11:09,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3deea241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:09, skipping insertion in model container [2022-07-19 21:11:09,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:08" (2/3) ... [2022-07-19 21:11:09,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3deea241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:09, skipping insertion in model container [2022-07-19 21:11:09,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:09" (3/3) ... [2022-07-19 21:11:09,016 INFO L111 eAbstractionObserver]: Analyzing ICFG safe010_tso.i [2022-07-19 21:11:09,035 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:11:09,043 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:11:09,043 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:11:09,044 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:11:09,072 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:11:09,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 74 transitions, 158 flow [2022-07-19 21:11:09,124 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2022-07-19 21:11:09,125 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:11:09,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2022-07-19 21:11:09,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 74 transitions, 158 flow [2022-07-19 21:11:09,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 60 transitions, 126 flow [2022-07-19 21:11:09,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:11:09,155 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@3d32e7eb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@551c7c67 [2022-07-19 21:11:09,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:11:09,169 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2022-07-19 21:11:09,170 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:11:09,170 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:09,171 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] [2022-07-19 21:11:09,171 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:11:09,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:09,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1233265517, now seen corresponding path program 1 times [2022-07-19 21:11:09,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:09,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160474812] [2022-07-19 21:11:09,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:09,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:09,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:09,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160474812] [2022-07-19 21:11:09,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160474812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:09,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:09,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:09,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836622462] [2022-07-19 21:11:09,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:09,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:09,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:09,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:09,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:09,548 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 74 [2022-07-19 21:11:09,550 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 126 flow. Second operand has 7 states, 7 states have (on average 54.714285714285715) internal successors, (383), 7 states have internal predecessors, (383), 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) [2022-07-19 21:11:09,550 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:09,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 74 [2022-07-19 21:11:09,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:09,907 INFO L129 PetriNetUnfolder]: 193/563 cut-off events. [2022-07-19 21:11:09,907 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-19 21:11:09,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 563 events. 193/563 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3326 event pairs, 12 based on Foata normal form. 27/580 useless extension candidates. Maximal degree in co-relation 912. Up to 89 conditions per place. [2022-07-19 21:11:09,917 INFO L132 encePairwiseOnDemand]: 62/74 looper letters, 35 selfloop transitions, 11 changer transitions 62/150 dead transitions. [2022-07-19 21:11:09,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 150 transitions, 528 flow [2022-07-19 21:11:09,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:11:09,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:11:09,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1017 transitions. [2022-07-19 21:11:09,938 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8084260731319555 [2022-07-19 21:11:09,938 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1017 transitions. [2022-07-19 21:11:09,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1017 transitions. [2022-07-19 21:11:09,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:09,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1017 transitions. [2022-07-19 21:11:09,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.8235294117647) internal successors, (1017), 17 states have internal predecessors, (1017), 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) [2022-07-19 21:11:09,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 74.0) internal successors, (1332), 18 states have internal predecessors, (1332), 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) [2022-07-19 21:11:09,953 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 74.0) internal successors, (1332), 18 states have internal predecessors, (1332), 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) [2022-07-19 21:11:09,954 INFO L186 Difference]: Start difference. First operand has 66 places, 60 transitions, 126 flow. Second operand 17 states and 1017 transitions. [2022-07-19 21:11:09,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 150 transitions, 528 flow [2022-07-19 21:11:09,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 150 transitions, 524 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:11:09,961 INFO L242 Difference]: Finished difference. Result has 95 places, 67 transitions, 247 flow [2022-07-19 21:11:09,963 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=247, PETRI_PLACES=95, PETRI_TRANSITIONS=67} [2022-07-19 21:11:09,965 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 29 predicate places. [2022-07-19 21:11:09,966 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 67 transitions, 247 flow [2022-07-19 21:11:09,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.714285714285715) internal successors, (383), 7 states have internal predecessors, (383), 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) [2022-07-19 21:11:09,966 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:09,966 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] [2022-07-19 21:11:09,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:11:09,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:11:09,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:09,967 INFO L85 PathProgramCache]: Analyzing trace with hash -904834382, now seen corresponding path program 1 times [2022-07-19 21:11:09,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:09,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740328243] [2022-07-19 21:11:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:09,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:10,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:10,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740328243] [2022-07-19 21:11:10,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740328243] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:10,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:10,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:11:10,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398978679] [2022-07-19 21:11:10,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:10,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:11:10,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:10,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:11:10,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:11:10,102 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2022-07-19 21:11:10,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 67 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 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) [2022-07-19 21:11:10,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:10,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2022-07-19 21:11:10,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:10,213 INFO L129 PetriNetUnfolder]: 32/171 cut-off events. [2022-07-19 21:11:10,213 INFO L130 PetriNetUnfolder]: For 1243/1343 co-relation queries the response was YES. [2022-07-19 21:11:10,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 171 events. 32/171 cut-off events. For 1243/1343 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 613 event pairs, 10 based on Foata normal form. 13/175 useless extension candidates. Maximal degree in co-relation 549. Up to 49 conditions per place. [2022-07-19 21:11:10,215 INFO L132 encePairwiseOnDemand]: 68/74 looper letters, 8 selfloop transitions, 3 changer transitions 10/77 dead transitions. [2022-07-19 21:11:10,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 77 transitions, 369 flow [2022-07-19 21:11:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:11:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:11:10,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 562 transitions. [2022-07-19 21:11:10,217 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8438438438438438 [2022-07-19 21:11:10,217 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 562 transitions. [2022-07-19 21:11:10,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 562 transitions. [2022-07-19 21:11:10,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:10,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 562 transitions. [2022-07-19 21:11:10,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.44444444444444) internal successors, (562), 9 states have internal predecessors, (562), 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) [2022-07-19 21:11:10,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2022-07-19 21:11:10,220 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2022-07-19 21:11:10,220 INFO L186 Difference]: Start difference. First operand has 95 places, 67 transitions, 247 flow. Second operand 9 states and 562 transitions. [2022-07-19 21:11:10,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 77 transitions, 369 flow [2022-07-19 21:11:10,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 307 flow, removed 31 selfloop flow, removed 9 redundant places. [2022-07-19 21:11:10,228 INFO L242 Difference]: Finished difference. Result has 89 places, 67 transitions, 238 flow [2022-07-19 21:11:10,229 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=238, PETRI_PLACES=89, PETRI_TRANSITIONS=67} [2022-07-19 21:11:10,229 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 23 predicate places. [2022-07-19 21:11:10,229 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 67 transitions, 238 flow [2022-07-19 21:11:10,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 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) [2022-07-19 21:11:10,230 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:10,230 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] [2022-07-19 21:11:10,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:11:10,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:11:10,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:10,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1292699150, now seen corresponding path program 1 times [2022-07-19 21:11:10,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:10,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709170582] [2022-07-19 21:11:10,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:10,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:10,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:10,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709170582] [2022-07-19 21:11:10,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709170582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:10,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:10,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:11:10,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519930494] [2022-07-19 21:11:10,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:10,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:11:10,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:10,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:11:10,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:11:10,377 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 74 [2022-07-19 21:11:10,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 67 transitions, 238 flow. Second operand has 9 states, 9 states have (on average 54.44444444444444) internal successors, (490), 9 states have internal predecessors, (490), 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) [2022-07-19 21:11:10,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:10,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 74 [2022-07-19 21:11:10,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:10,873 INFO L129 PetriNetUnfolder]: 132/406 cut-off events. [2022-07-19 21:11:10,874 INFO L130 PetriNetUnfolder]: For 1016/1094 co-relation queries the response was YES. [2022-07-19 21:11:10,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 406 events. 132/406 cut-off events. For 1016/1094 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2097 event pairs, 10 based on Foata normal form. 15/416 useless extension candidates. Maximal degree in co-relation 1303. Up to 99 conditions per place. [2022-07-19 21:11:10,877 INFO L132 encePairwiseOnDemand]: 63/74 looper letters, 35 selfloop transitions, 14 changer transitions 58/149 dead transitions. [2022-07-19 21:11:10,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 149 transitions, 1005 flow [2022-07-19 21:11:10,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:11:10,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:11:10,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1277 transitions. [2022-07-19 21:11:10,882 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7843980343980343 [2022-07-19 21:11:10,882 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1277 transitions. [2022-07-19 21:11:10,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1277 transitions. [2022-07-19 21:11:10,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:10,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1277 transitions. [2022-07-19 21:11:10,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.04545454545455) internal successors, (1277), 22 states have internal predecessors, (1277), 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) [2022-07-19 21:11:10,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 74.0) internal successors, (1702), 23 states have internal predecessors, (1702), 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) [2022-07-19 21:11:10,902 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 74.0) internal successors, (1702), 23 states have internal predecessors, (1702), 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) [2022-07-19 21:11:10,903 INFO L186 Difference]: Start difference. First operand has 89 places, 67 transitions, 238 flow. Second operand 22 states and 1277 transitions. [2022-07-19 21:11:10,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 149 transitions, 1005 flow [2022-07-19 21:11:10,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 149 transitions, 901 flow, removed 48 selfloop flow, removed 8 redundant places. [2022-07-19 21:11:10,910 INFO L242 Difference]: Finished difference. Result has 112 places, 69 transitions, 292 flow [2022-07-19 21:11:10,910 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=292, PETRI_PLACES=112, PETRI_TRANSITIONS=69} [2022-07-19 21:11:10,912 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 46 predicate places. [2022-07-19 21:11:10,912 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 69 transitions, 292 flow [2022-07-19 21:11:10,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 54.44444444444444) internal successors, (490), 9 states have internal predecessors, (490), 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) [2022-07-19 21:11:10,913 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:10,913 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] [2022-07-19 21:11:10,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:11:10,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:11:10,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:10,915 INFO L85 PathProgramCache]: Analyzing trace with hash -961003417, now seen corresponding path program 1 times [2022-07-19 21:11:10,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:10,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396590832] [2022-07-19 21:11:10,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:10,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:11,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:11,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396590832] [2022-07-19 21:11:11,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396590832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:11,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:11,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:11,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177418118] [2022-07-19 21:11:11,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:11,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:11,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:11,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:11,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:11,117 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 74 [2022-07-19 21:11:11,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 69 transitions, 292 flow. Second operand has 7 states, 7 states have (on average 56.857142857142854) internal successors, (398), 7 states have internal predecessors, (398), 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) [2022-07-19 21:11:11,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:11,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 74 [2022-07-19 21:11:11,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:11,329 INFO L129 PetriNetUnfolder]: 87/309 cut-off events. [2022-07-19 21:11:11,343 INFO L130 PetriNetUnfolder]: For 1581/1803 co-relation queries the response was YES. [2022-07-19 21:11:11,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 309 events. 87/309 cut-off events. For 1581/1803 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1353 event pairs, 6 based on Foata normal form. 25/327 useless extension candidates. Maximal degree in co-relation 1072. Up to 62 conditions per place. [2022-07-19 21:11:11,347 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 27 selfloop transitions, 11 changer transitions 24/110 dead transitions. [2022-07-19 21:11:11,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 110 transitions, 759 flow [2022-07-19 21:11:11,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:11:11,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:11:11,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 660 transitions. [2022-07-19 21:11:11,350 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8108108108108109 [2022-07-19 21:11:11,350 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 660 transitions. [2022-07-19 21:11:11,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 660 transitions. [2022-07-19 21:11:11,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:11,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 660 transitions. [2022-07-19 21:11:11,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 60.0) internal successors, (660), 11 states have internal predecessors, (660), 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) [2022-07-19 21:11:11,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 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) [2022-07-19 21:11:11,357 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 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) [2022-07-19 21:11:11,357 INFO L186 Difference]: Start difference. First operand has 112 places, 69 transitions, 292 flow. Second operand 11 states and 660 transitions. [2022-07-19 21:11:11,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 110 transitions, 759 flow [2022-07-19 21:11:11,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 110 transitions, 580 flow, removed 80 selfloop flow, removed 18 redundant places. [2022-07-19 21:11:11,369 INFO L242 Difference]: Finished difference. Result has 98 places, 71 transitions, 319 flow [2022-07-19 21:11:11,369 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=319, PETRI_PLACES=98, PETRI_TRANSITIONS=71} [2022-07-19 21:11:11,371 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 32 predicate places. [2022-07-19 21:11:11,371 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 71 transitions, 319 flow [2022-07-19 21:11:11,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.857142857142854) internal successors, (398), 7 states have internal predecessors, (398), 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) [2022-07-19 21:11:11,390 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:11,390 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] [2022-07-19 21:11:11,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:11:11,391 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:11:11,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:11,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2004569707, now seen corresponding path program 2 times [2022-07-19 21:11:11,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:11,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30671767] [2022-07-19 21:11:11,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:11,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:11,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:11,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30671767] [2022-07-19 21:11:11,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30671767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:11,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:11,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:11:11,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891089466] [2022-07-19 21:11:11,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:11,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:11:11,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:11,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:11:11,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:11:11,510 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 74 [2022-07-19 21:11:11,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 71 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 56.625) internal successors, (453), 8 states have internal predecessors, (453), 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) [2022-07-19 21:11:11,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:11,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 74 [2022-07-19 21:11:11,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:11,630 INFO L129 PetriNetUnfolder]: 58/235 cut-off events. [2022-07-19 21:11:11,631 INFO L130 PetriNetUnfolder]: For 1034/1233 co-relation queries the response was YES. [2022-07-19 21:11:11,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 235 events. 58/235 cut-off events. For 1034/1233 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 912 event pairs, 9 based on Foata normal form. 28/257 useless extension candidates. Maximal degree in co-relation 770. Up to 50 conditions per place. [2022-07-19 21:11:11,632 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 15 selfloop transitions, 6 changer transitions 34/101 dead transitions. [2022-07-19 21:11:11,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 101 transitions, 664 flow [2022-07-19 21:11:11,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:11:11,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:11:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 647 transitions. [2022-07-19 21:11:11,634 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7948402948402948 [2022-07-19 21:11:11,634 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 647 transitions. [2022-07-19 21:11:11,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 647 transitions. [2022-07-19 21:11:11,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:11,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 647 transitions. [2022-07-19 21:11:11,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.81818181818182) internal successors, (647), 11 states have internal predecessors, (647), 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) [2022-07-19 21:11:11,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 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) [2022-07-19 21:11:11,637 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 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) [2022-07-19 21:11:11,637 INFO L186 Difference]: Start difference. First operand has 98 places, 71 transitions, 319 flow. Second operand 11 states and 647 transitions. [2022-07-19 21:11:11,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 101 transitions, 664 flow [2022-07-19 21:11:11,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 101 transitions, 598 flow, removed 23 selfloop flow, removed 8 redundant places. [2022-07-19 21:11:11,640 INFO L242 Difference]: Finished difference. Result has 102 places, 62 transitions, 259 flow [2022-07-19 21:11:11,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=259, PETRI_PLACES=102, PETRI_TRANSITIONS=62} [2022-07-19 21:11:11,642 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 36 predicate places. [2022-07-19 21:11:11,642 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 62 transitions, 259 flow [2022-07-19 21:11:11,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 56.625) internal successors, (453), 8 states have internal predecessors, (453), 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) [2022-07-19 21:11:11,642 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:11,642 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] [2022-07-19 21:11:11,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:11:11,643 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:11:11,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:11,644 INFO L85 PathProgramCache]: Analyzing trace with hash -3586023, now seen corresponding path program 1 times [2022-07-19 21:11:11,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:11,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259976861] [2022-07-19 21:11:11,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:11,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:11,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:11,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:11,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259976861] [2022-07-19 21:11:11,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259976861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:11,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:11,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:11:11,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562627217] [2022-07-19 21:11:11,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:11,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:11:11,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:11,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:11:11,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:11:11,737 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 74 [2022-07-19 21:11:11,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 62 transitions, 259 flow. Second operand has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 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) [2022-07-19 21:11:11,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:11,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 74 [2022-07-19 21:11:11,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:11,820 INFO L129 PetriNetUnfolder]: 35/160 cut-off events. [2022-07-19 21:11:11,820 INFO L130 PetriNetUnfolder]: For 631/664 co-relation queries the response was YES. [2022-07-19 21:11:11,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 160 events. 35/160 cut-off events. For 631/664 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 548 event pairs, 3 based on Foata normal form. 12/170 useless extension candidates. Maximal degree in co-relation 458. Up to 42 conditions per place. [2022-07-19 21:11:11,821 INFO L132 encePairwiseOnDemand]: 66/74 looper letters, 8 selfloop transitions, 4 changer transitions 23/82 dead transitions. [2022-07-19 21:11:11,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 82 transitions, 457 flow [2022-07-19 21:11:11,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:11:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:11:11,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 564 transitions. [2022-07-19 21:11:11,822 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8468468468468469 [2022-07-19 21:11:11,822 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 564 transitions. [2022-07-19 21:11:11,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 564 transitions. [2022-07-19 21:11:11,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:11,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 564 transitions. [2022-07-19 21:11:11,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.666666666666664) internal successors, (564), 9 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) [2022-07-19 21:11:11,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2022-07-19 21:11:11,825 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2022-07-19 21:11:11,825 INFO L186 Difference]: Start difference. First operand has 102 places, 62 transitions, 259 flow. Second operand 9 states and 564 transitions. [2022-07-19 21:11:11,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 82 transitions, 457 flow [2022-07-19 21:11:11,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 82 transitions, 354 flow, removed 27 selfloop flow, removed 19 redundant places. [2022-07-19 21:11:11,827 INFO L242 Difference]: Finished difference. Result has 90 places, 58 transitions, 190 flow [2022-07-19 21:11:11,827 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=90, PETRI_TRANSITIONS=58} [2022-07-19 21:11:11,829 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2022-07-19 21:11:11,829 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 58 transitions, 190 flow [2022-07-19 21:11:11,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 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) [2022-07-19 21:11:11,830 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:11,830 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] [2022-07-19 21:11:11,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:11:11,830 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:11:11,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:11,830 INFO L85 PathProgramCache]: Analyzing trace with hash -390679982, now seen corresponding path program 1 times [2022-07-19 21:11:11,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:11,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682782057] [2022-07-19 21:11:11,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:11,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:11,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:11,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:11,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682782057] [2022-07-19 21:11:11,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682782057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:11,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:11,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:11,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141908318] [2022-07-19 21:11:11,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:11,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:11,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:11,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:11,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:11,913 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 74 [2022-07-19 21:11:11,914 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 58 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 60.42857142857143) internal successors, (423), 7 states have internal predecessors, (423), 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) [2022-07-19 21:11:11,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:11,914 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 74 [2022-07-19 21:11:11,914 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:11,998 INFO L129 PetriNetUnfolder]: 4/71 cut-off events. [2022-07-19 21:11:11,999 INFO L130 PetriNetUnfolder]: For 110/114 co-relation queries the response was YES. [2022-07-19 21:11:11,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 71 events. 4/71 cut-off events. For 110/114 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 2/73 useless extension candidates. Maximal degree in co-relation 157. Up to 9 conditions per place. [2022-07-19 21:11:11,999 INFO L132 encePairwiseOnDemand]: 66/74 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2022-07-19 21:11:11,999 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 61 transitions, 263 flow [2022-07-19 21:11:11,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:11:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:11:12,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 613 transitions. [2022-07-19 21:11:12,001 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8283783783783784 [2022-07-19 21:11:12,001 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 613 transitions. [2022-07-19 21:11:12,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 613 transitions. [2022-07-19 21:11:12,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:12,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 613 transitions. [2022-07-19 21:11:12,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 61.3) internal successors, (613), 10 states have internal predecessors, (613), 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) [2022-07-19 21:11:12,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2022-07-19 21:11:12,004 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2022-07-19 21:11:12,004 INFO L186 Difference]: Start difference. First operand has 90 places, 58 transitions, 190 flow. Second operand 10 states and 613 transitions. [2022-07-19 21:11:12,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 61 transitions, 263 flow [2022-07-19 21:11:12,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 61 transitions, 186 flow, removed 26 selfloop flow, removed 16 redundant places. [2022-07-19 21:11:12,005 INFO L242 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2022-07-19 21:11:12,005 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=71, PETRI_TRANSITIONS=0} [2022-07-19 21:11:12,006 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2022-07-19 21:11:12,006 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2022-07-19 21:11:12,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.42857142857143) internal successors, (423), 7 states have internal predecessors, (423), 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) [2022-07-19 21:11:12,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-19 21:11:12,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-19 21:11:12,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-19 21:11:12,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:11:12,009 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-07-19 21:11:12,012 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:11:12,012 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:11:12,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:11:12 BasicIcfg [2022-07-19 21:11:12,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:11:12,016 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:11:12,016 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:11:12,016 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:11:12,016 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:09" (3/4) ... [2022-07-19 21:11:12,018 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:11:12,022 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-19 21:11:12,022 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-19 21:11:12,025 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-07-19 21:11:12,025 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:11:12,028 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:11:12,028 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:11:12,054 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:11:12,054 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:11:12,055 INFO L158 Benchmark]: Toolchain (without parser) took 3969.64ms. Allocated memory was 119.5MB in the beginning and 182.5MB in the end (delta: 62.9MB). Free memory was 89.5MB in the beginning and 148.6MB in the end (delta: -59.1MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2022-07-19 21:11:12,055 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 119.5MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:11:12,055 INFO L158 Benchmark]: CACSL2BoogieTranslator took 522.85ms. Allocated memory is still 119.5MB. Free memory was 89.2MB in the beginning and 84.4MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 21:11:12,056 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.65ms. Allocated memory is still 119.5MB. Free memory was 84.4MB in the beginning and 82.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:11:12,056 INFO L158 Benchmark]: Boogie Preprocessor took 19.35ms. Allocated memory is still 119.5MB. Free memory was 82.6MB in the beginning and 81.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:11:12,056 INFO L158 Benchmark]: RCFGBuilder took 338.73ms. Allocated memory is still 119.5MB. Free memory was 81.0MB in the beginning and 69.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 21:11:12,056 INFO L158 Benchmark]: TraceAbstraction took 3003.94ms. Allocated memory was 119.5MB in the beginning and 182.5MB in the end (delta: 62.9MB). Free memory was 68.9MB in the beginning and 150.7MB in the end (delta: -81.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:11:12,056 INFO L158 Benchmark]: Witness Printer took 38.63ms. Allocated memory is still 182.5MB. Free memory was 150.7MB in the beginning and 148.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:11:12,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 119.5MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 522.85ms. Allocated memory is still 119.5MB. Free memory was 89.2MB in the beginning and 84.4MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.65ms. Allocated memory is still 119.5MB. Free memory was 84.4MB in the beginning and 82.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.35ms. Allocated memory is still 119.5MB. Free memory was 82.6MB in the beginning and 81.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 338.73ms. Allocated memory is still 119.5MB. Free memory was 81.0MB in the beginning and 69.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3003.94ms. Allocated memory was 119.5MB in the beginning and 182.5MB in the end (delta: 62.9MB). Free memory was 68.9MB in the beginning and 150.7MB in the end (delta: -81.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 38.63ms. Allocated memory is still 182.5MB. Free memory was 150.7MB in the beginning and 148.6MB in the end (delta: 2.1MB). 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 5 procedures, 89 locations, 3 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: 2.9s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 349 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 349 mSDsluCounter, 383 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 356 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 450 IncrementalHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 84 mSDtfsCounter, 450 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=319occurred in iteration=4, InterpolantAutomatonStates: 89, 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, 0.7s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 338 ConstructedInterpolants, 0 QuantifiedInterpolants, 1397 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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! [2022-07-19 21:11:12,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE