./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.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 f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:53:16,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:53:16,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:53:16,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:53:16,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:53:16,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:53:16,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:53:16,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:53:16,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:53:16,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:53:16,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:53:16,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:53:16,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:53:16,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:53:16,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:53:16,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:53:16,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:53:16,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:53:16,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:53:16,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:53:16,201 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:53:16,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:53:16,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:53:16,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:53:16,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:53:16,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:53:16,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:53:16,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:53:16,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:53:16,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:53:16,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:53:16,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:53:16,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:53:16,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:53:16,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:53:16,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:53:16,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:53:16,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:53:16,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:53:16,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:53:16,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:53:16,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:53:16,219 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:53:16,251 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:53:16,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:53:16,253 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:53:16,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:53:16,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:53:16,254 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:53:16,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:53:16,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:53:16,255 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:53:16,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:53:16,257 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:53:16,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:53:16,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:53:16,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:53:16,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:53:16,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:53:16,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:53:16,272 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:53:16,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:53:16,272 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:53:16,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:53:16,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:53:16,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:53:16,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:53:16,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:53:16,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:53:16,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:53:16,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:53:16,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:53:16,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:53:16,275 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:53:16,275 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:53:16,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:53:16,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2022-07-21 08:53:16,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:53:16,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:53:16,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:53:16,606 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:53:16,607 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:53:16,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-07-21 08:53:16,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/339832b32/0316e0decff04482be5f5c7632cfdc8f/FLAGc3ff8656f [2022-07-21 08:53:17,210 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:53:17,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-07-21 08:53:17,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/339832b32/0316e0decff04482be5f5c7632cfdc8f/FLAGc3ff8656f [2022-07-21 08:53:17,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/339832b32/0316e0decff04482be5f5c7632cfdc8f [2022-07-21 08:53:17,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:53:17,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:53:17,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:53:17,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:53:17,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:53:17,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:53:17" (1/1) ... [2022-07-21 08:53:17,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a028fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:53:17, skipping insertion in model container [2022-07-21 08:53:17,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:53:17" (1/1) ... [2022-07-21 08:53:17,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:53:17,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:53:18,030 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/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2022-07-21 08:53:18,051 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-21 08:53:18,052 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-21 08:53:18,052 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-21 08:53:18,053 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-21 08:53:18,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:53:18,108 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:53:18,152 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/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2022-07-21 08:53:18,155 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-21 08:53:18,156 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-21 08:53:18,156 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-21 08:53:18,156 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-21 08:53:18,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:53:18,243 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:53:18,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:53:18 WrapperNode [2022-07-21 08:53:18,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:53:18,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:53:18,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:53:18,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:53:18,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:53:18" (1/1) ... [2022-07-21 08:53:18,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:53:18" (1/1) ... [2022-07-21 08:53:18,312 INFO L137 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 300 [2022-07-21 08:53:18,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:53:18,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:53:18,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:53:18,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:53:18,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:53:18" (1/1) ... [2022-07-21 08:53:18,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:53:18" (1/1) ... [2022-07-21 08:53:18,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:53:18" (1/1) ... [2022-07-21 08:53:18,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:53:18" (1/1) ... [2022-07-21 08:53:18,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:53:18" (1/1) ... [2022-07-21 08:53:18,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:53:18" (1/1) ... [2022-07-21 08:53:18,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:53:18" (1/1) ... [2022-07-21 08:53:18,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:53:18,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:53:18,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:53:18,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:53:18,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:53:18" (1/1) ... [2022-07-21 08:53:18,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:53:18,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:53:18,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:53:18,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:53:18,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:53:18,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 08:53:18,440 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-07-21 08:53:18,441 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-07-21 08:53:18,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:53:18,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:53:18,441 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-07-21 08:53:18,441 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-07-21 08:53:18,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:53:18,442 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-21 08:53:18,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 08:53:18,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:53:18,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 08:53:18,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:53:18,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:53:18,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:53:18,452 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:53:18,668 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:53:18,669 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:53:19,126 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:53:19,135 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:53:19,139 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2022-07-21 08:53:19,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:53:19 BoogieIcfgContainer [2022-07-21 08:53:19,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:53:19,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:53:19,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:53:19,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:53:19,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:53:17" (1/3) ... [2022-07-21 08:53:19,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1482f389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:53:19, skipping insertion in model container [2022-07-21 08:53:19,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:53:18" (2/3) ... [2022-07-21 08:53:19,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1482f389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:53:19, skipping insertion in model container [2022-07-21 08:53:19,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:53:19" (3/3) ... [2022-07-21 08:53:19,151 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2022-07-21 08:53:19,156 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:53:19,164 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:53:19,165 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:53:19,165 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:53:19,288 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-21 08:53:19,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 277 places, 318 transitions, 658 flow [2022-07-21 08:53:19,495 INFO L129 PetriNetUnfolder]: 77/514 cut-off events. [2022-07-21 08:53:19,495 INFO L130 PetriNetUnfolder]: For 8/14 co-relation queries the response was YES. [2022-07-21 08:53:19,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 514 events. 77/514 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2392 event pairs, 0 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 261. Up to 8 conditions per place. [2022-07-21 08:53:19,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 277 places, 318 transitions, 658 flow [2022-07-21 08:53:19,515 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 277 places, 318 transitions, 658 flow [2022-07-21 08:53:19,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:53:19,532 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@38726aa3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@30b17694 [2022-07-21 08:53:19,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-21 08:53:19,543 INFO L129 PetriNetUnfolder]: 13/135 cut-off events. [2022-07-21 08:53:19,544 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:53:19,544 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:53:19,545 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:53:19,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:53:19,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:53:19,550 INFO L85 PathProgramCache]: Analyzing trace with hash 115208198, now seen corresponding path program 1 times [2022-07-21 08:53:19,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:53:19,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408905908] [2022-07-21 08:53:19,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:53:19,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:53:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:53:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:53:19,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:53:19,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408905908] [2022-07-21 08:53:19,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408905908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:53:19,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:53:19,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:53:19,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321005139] [2022-07-21 08:53:19,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:53:19,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 08:53:19,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:53:19,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 08:53:19,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:53:19,829 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 318 [2022-07-21 08:53:19,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 318 transitions, 658 flow. Second operand has 2 states, 2 states have (on average 277.0) internal successors, (554), 2 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:19,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:53:19,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 318 [2022-07-21 08:53:19,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:53:19,950 INFO L129 PetriNetUnfolder]: 19/453 cut-off events. [2022-07-21 08:53:19,951 INFO L130 PetriNetUnfolder]: For 33/41 co-relation queries the response was YES. [2022-07-21 08:53:19,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 453 events. 19/453 cut-off events. For 33/41 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2141 event pairs, 0 based on Foata normal form. 97/519 useless extension candidates. Maximal degree in co-relation 235. Up to 12 conditions per place. [2022-07-21 08:53:19,959 INFO L132 encePairwiseOnDemand]: 284/318 looper letters, 6 selfloop transitions, 0 changer transitions 0/282 dead transitions. [2022-07-21 08:53:19,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 282 transitions, 598 flow [2022-07-21 08:53:19,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 08:53:19,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-21 08:53:19,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 592 transitions. [2022-07-21 08:53:19,981 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9308176100628931 [2022-07-21 08:53:19,982 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 592 transitions. [2022-07-21 08:53:19,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 592 transitions. [2022-07-21 08:53:19,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:53:19,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 592 transitions. [2022-07-21 08:53:19,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 296.0) internal successors, (592), 2 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:20,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:20,006 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:20,008 INFO L186 Difference]: Start difference. First operand has 277 places, 318 transitions, 658 flow. Second operand 2 states and 592 transitions. [2022-07-21 08:53:20,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 282 transitions, 598 flow [2022-07-21 08:53:20,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 282 transitions, 598 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:53:20,026 INFO L242 Difference]: Finished difference. Result has 276 places, 282 transitions, 586 flow [2022-07-21 08:53:20,028 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=586, PETRI_PLACES=276, PETRI_TRANSITIONS=282} [2022-07-21 08:53:20,035 INFO L279 CegarLoopForPetriNet]: 277 programPoint places, -1 predicate places. [2022-07-21 08:53:20,035 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 282 transitions, 586 flow [2022-07-21 08:53:20,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 277.0) internal successors, (554), 2 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:20,036 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:53:20,037 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:53:20,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:53:20,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:53:20,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:53:20,040 INFO L85 PathProgramCache]: Analyzing trace with hash -881864155, now seen corresponding path program 1 times [2022-07-21 08:53:20,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:53:20,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238253751] [2022-07-21 08:53:20,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:53:20,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:53:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:53:20,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:53:20,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:53:20,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238253751] [2022-07-21 08:53:20,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238253751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:53:20,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:53:20,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:53:20,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748420603] [2022-07-21 08:53:20,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:53:20,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:53:20,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:53:20,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:53:20,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:53:20,132 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 318 [2022-07-21 08:53:20,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 282 transitions, 586 flow. Second operand has 3 states, 3 states have (on average 267.3333333333333) internal successors, (802), 3 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:20,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:53:20,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 318 [2022-07-21 08:53:20,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:53:20,250 INFO L129 PetriNetUnfolder]: 20/503 cut-off events. [2022-07-21 08:53:20,251 INFO L130 PetriNetUnfolder]: For 33/41 co-relation queries the response was YES. [2022-07-21 08:53:20,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 503 events. 20/503 cut-off events. For 33/41 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2408 event pairs, 0 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 548. Up to 22 conditions per place. [2022-07-21 08:53:20,256 INFO L132 encePairwiseOnDemand]: 315/318 looper letters, 21 selfloop transitions, 2 changer transitions 0/289 dead transitions. [2022-07-21 08:53:20,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 289 transitions, 646 flow [2022-07-21 08:53:20,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:53:20,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:53:20,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 822 transitions. [2022-07-21 08:53:20,260 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8616352201257862 [2022-07-21 08:53:20,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 822 transitions. [2022-07-21 08:53:20,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 822 transitions. [2022-07-21 08:53:20,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:53:20,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 822 transitions. [2022-07-21 08:53:20,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:20,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:20,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:20,266 INFO L186 Difference]: Start difference. First operand has 276 places, 282 transitions, 586 flow. Second operand 3 states and 822 transitions. [2022-07-21 08:53:20,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 289 transitions, 646 flow [2022-07-21 08:53:20,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 289 transitions, 646 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:53:20,273 INFO L242 Difference]: Finished difference. Result has 279 places, 283 transitions, 598 flow [2022-07-21 08:53:20,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=598, PETRI_PLACES=279, PETRI_TRANSITIONS=283} [2022-07-21 08:53:20,274 INFO L279 CegarLoopForPetriNet]: 277 programPoint places, 2 predicate places. [2022-07-21 08:53:20,275 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 283 transitions, 598 flow [2022-07-21 08:53:20,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.3333333333333) internal successors, (802), 3 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:20,275 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:53:20,276 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:53:20,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:53:20,276 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:53:20,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:53:20,277 INFO L85 PathProgramCache]: Analyzing trace with hash -32979058, now seen corresponding path program 1 times [2022-07-21 08:53:20,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:53:20,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542435195] [2022-07-21 08:53:20,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:53:20,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:53:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:53:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:53:20,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:53:20,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542435195] [2022-07-21 08:53:20,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542435195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:53:20,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:53:20,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:53:20,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701303338] [2022-07-21 08:53:20,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:53:20,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:53:20,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:53:20,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:53:20,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:53:20,349 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 318 [2022-07-21 08:53:20,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 283 transitions, 598 flow. Second operand has 3 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:20,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:53:20,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 318 [2022-07-21 08:53:20,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:53:20,473 INFO L129 PetriNetUnfolder]: 20/575 cut-off events. [2022-07-21 08:53:20,473 INFO L130 PetriNetUnfolder]: For 34/42 co-relation queries the response was YES. [2022-07-21 08:53:20,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 575 events. 20/575 cut-off events. For 34/42 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2488 event pairs, 0 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 629. Up to 25 conditions per place. [2022-07-21 08:53:20,477 INFO L132 encePairwiseOnDemand]: 315/318 looper letters, 15 selfloop transitions, 2 changer transitions 0/287 dead transitions. [2022-07-21 08:53:20,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 287 transitions, 640 flow [2022-07-21 08:53:20,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:53:20,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:53:20,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 825 transitions. [2022-07-21 08:53:20,480 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8647798742138365 [2022-07-21 08:53:20,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 825 transitions. [2022-07-21 08:53:20,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 825 transitions. [2022-07-21 08:53:20,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:53:20,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 825 transitions. [2022-07-21 08:53:20,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:20,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:20,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:20,486 INFO L186 Difference]: Start difference. First operand has 279 places, 283 transitions, 598 flow. Second operand 3 states and 825 transitions. [2022-07-21 08:53:20,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 287 transitions, 640 flow [2022-07-21 08:53:20,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 287 transitions, 638 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:53:20,492 INFO L242 Difference]: Finished difference. Result has 281 places, 284 transitions, 608 flow [2022-07-21 08:53:20,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=608, PETRI_PLACES=281, PETRI_TRANSITIONS=284} [2022-07-21 08:53:20,494 INFO L279 CegarLoopForPetriNet]: 277 programPoint places, 4 predicate places. [2022-07-21 08:53:20,494 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 284 transitions, 608 flow [2022-07-21 08:53:20,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:20,495 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:53:20,495 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:53:20,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:53:20,495 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:53:20,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:53:20,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1227432893, now seen corresponding path program 1 times [2022-07-21 08:53:20,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:53:20,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854928071] [2022-07-21 08:53:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:53:20,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:53:20,525 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 08:53:20,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687120892] [2022-07-21 08:53:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:53:20,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:53:20,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:53:20,533 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:53:20,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:53:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:53:20,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 08:53:20,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:53:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:53:20,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:53:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:53:20,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:53:20,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854928071] [2022-07-21 08:53:20,970 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 08:53:20,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687120892] [2022-07-21 08:53:20,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687120892] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:53:20,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 08:53:20,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-21 08:53:20,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92770556] [2022-07-21 08:53:20,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 08:53:20,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:53:20,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:53:20,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:53:20,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:53:20,981 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 318 [2022-07-21 08:53:20,984 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 284 transitions, 608 flow. Second operand has 8 states, 8 states have (on average 270.0) internal successors, (2160), 8 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:20,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:53:20,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 318 [2022-07-21 08:53:20,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:53:21,214 INFO L129 PetriNetUnfolder]: 20/653 cut-off events. [2022-07-21 08:53:21,215 INFO L130 PetriNetUnfolder]: For 39/47 co-relation queries the response was YES. [2022-07-21 08:53:21,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 653 events. 20/653 cut-off events. For 39/47 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2228 event pairs, 0 based on Foata normal form. 4/628 useless extension candidates. Maximal degree in co-relation 734. Up to 19 conditions per place. [2022-07-21 08:53:21,222 INFO L132 encePairwiseOnDemand]: 312/318 looper letters, 16 selfloop transitions, 9 changer transitions 0/294 dead transitions. [2022-07-21 08:53:21,222 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 294 transitions, 680 flow [2022-07-21 08:53:21,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:53:21,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:53:21,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2439 transitions. [2022-07-21 08:53:21,229 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8522012578616353 [2022-07-21 08:53:21,229 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2439 transitions. [2022-07-21 08:53:21,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2439 transitions. [2022-07-21 08:53:21,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:53:21,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2439 transitions. [2022-07-21 08:53:21,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 271.0) internal successors, (2439), 9 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:21,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 318.0) internal successors, (3180), 10 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:21,246 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 318.0) internal successors, (3180), 10 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:21,246 INFO L186 Difference]: Start difference. First operand has 281 places, 284 transitions, 608 flow. Second operand 9 states and 2439 transitions. [2022-07-21 08:53:21,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 294 transitions, 680 flow [2022-07-21 08:53:21,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 294 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:53:21,252 INFO L242 Difference]: Finished difference. Result has 291 places, 290 transitions, 656 flow [2022-07-21 08:53:21,253 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=656, PETRI_PLACES=291, PETRI_TRANSITIONS=290} [2022-07-21 08:53:21,253 INFO L279 CegarLoopForPetriNet]: 277 programPoint places, 14 predicate places. [2022-07-21 08:53:21,254 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 290 transitions, 656 flow [2022-07-21 08:53:21,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.0) internal successors, (2160), 8 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:21,255 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:53:21,255 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:53:21,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 08:53:21,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:53:21,475 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:53:21,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:53:21,475 INFO L85 PathProgramCache]: Analyzing trace with hash -134988195, now seen corresponding path program 2 times [2022-07-21 08:53:21,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:53:21,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631598336] [2022-07-21 08:53:21,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:53:21,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:53:21,530 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 08:53:21,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [632879608] [2022-07-21 08:53:21,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 08:53:21,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:53:21,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:53:21,533 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:53:21,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:53:21,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 08:53:21,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 08:53:21,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 08:53:21,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:53:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 1 proven. 114 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:53:21,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:53:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 1 proven. 114 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:53:22,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:53:22,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631598336] [2022-07-21 08:53:22,179 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 08:53:22,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632879608] [2022-07-21 08:53:22,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632879608] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:53:22,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 08:53:22,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-07-21 08:53:22,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588537541] [2022-07-21 08:53:22,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 08:53:22,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 08:53:22,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:53:22,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 08:53:22,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:53:22,187 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 318 [2022-07-21 08:53:22,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 290 transitions, 656 flow. Second operand has 16 states, 16 states have (on average 270.25) internal successors, (4324), 16 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:22,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:53:22,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 318 [2022-07-21 08:53:22,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:53:22,522 INFO L129 PetriNetUnfolder]: 20/949 cut-off events. [2022-07-21 08:53:22,522 INFO L130 PetriNetUnfolder]: For 93/101 co-relation queries the response was YES. [2022-07-21 08:53:22,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1174 conditions, 949 events. 20/949 cut-off events. For 93/101 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2228 event pairs, 0 based on Foata normal form. 8/928 useless extension candidates. Maximal degree in co-relation 1164. Up to 22 conditions per place. [2022-07-21 08:53:22,530 INFO L132 encePairwiseOnDemand]: 312/318 looper letters, 24 selfloop transitions, 21 changer transitions 0/314 dead transitions. [2022-07-21 08:53:22,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 314 transitions, 854 flow [2022-07-21 08:53:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:53:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:53:22,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5677 transitions. [2022-07-21 08:53:22,544 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850104821802935 [2022-07-21 08:53:22,544 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5677 transitions. [2022-07-21 08:53:22,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5677 transitions. [2022-07-21 08:53:22,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:53:22,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5677 transitions. [2022-07-21 08:53:22,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 270.3333333333333) internal successors, (5677), 21 states have internal predecessors, (5677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:22,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 318.0) internal successors, (6996), 22 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:22,581 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 318.0) internal successors, (6996), 22 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:22,581 INFO L186 Difference]: Start difference. First operand has 291 places, 290 transitions, 656 flow. Second operand 21 states and 5677 transitions. [2022-07-21 08:53:22,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 314 transitions, 854 flow [2022-07-21 08:53:22,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 314 transitions, 840 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-07-21 08:53:22,591 INFO L242 Difference]: Finished difference. Result has 315 places, 303 transitions, 780 flow [2022-07-21 08:53:22,592 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=780, PETRI_PLACES=315, PETRI_TRANSITIONS=303} [2022-07-21 08:53:22,594 INFO L279 CegarLoopForPetriNet]: 277 programPoint places, 38 predicate places. [2022-07-21 08:53:22,594 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 303 transitions, 780 flow [2022-07-21 08:53:22,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 270.25) internal successors, (4324), 16 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:22,596 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:53:22,597 INFO L200 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:53:22,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 08:53:22,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:53:22,823 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:53:22,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:53:22,824 INFO L85 PathProgramCache]: Analyzing trace with hash -491054179, now seen corresponding path program 3 times [2022-07-21 08:53:22,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:53:22,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092899972] [2022-07-21 08:53:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:53:22,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:53:22,883 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 08:53:22,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79825107] [2022-07-21 08:53:22,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 08:53:22,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:53:22,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:53:22,885 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:53:22,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 08:53:23,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-21 08:53:23,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 08:53:23,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 08:53:23,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:53:23,391 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2022-07-21 08:53:23,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:53:23,747 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2022-07-21 08:53:23,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:53:23,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092899972] [2022-07-21 08:53:23,747 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 08:53:23,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79825107] [2022-07-21 08:53:23,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79825107] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:53:23,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 08:53:23,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-21 08:53:23,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301698892] [2022-07-21 08:53:23,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 08:53:23,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:53:23,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:53:23,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:53:23,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:53:23,751 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 318 [2022-07-21 08:53:23,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 303 transitions, 780 flow. Second operand has 8 states, 8 states have (on average 267.75) internal successors, (2142), 8 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:23,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:53:23,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 318 [2022-07-21 08:53:23,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:53:24,177 INFO L129 PetriNetUnfolder]: 21/1225 cut-off events. [2022-07-21 08:53:24,177 INFO L130 PetriNetUnfolder]: For 145/153 co-relation queries the response was YES. [2022-07-21 08:53:24,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1586 conditions, 1225 events. 21/1225 cut-off events. For 145/153 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1791 event pairs, 0 based on Foata normal form. 2/1198 useless extension candidates. Maximal degree in co-relation 1571. Up to 33 conditions per place. [2022-07-21 08:53:24,185 INFO L132 encePairwiseOnDemand]: 312/318 looper letters, 25 selfloop transitions, 9 changer transitions 0/319 dead transitions. [2022-07-21 08:53:24,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 319 transitions, 882 flow [2022-07-21 08:53:24,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:53:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:53:24,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2421 transitions. [2022-07-21 08:53:24,191 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8459119496855346 [2022-07-21 08:53:24,191 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2421 transitions. [2022-07-21 08:53:24,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2421 transitions. [2022-07-21 08:53:24,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:53:24,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2421 transitions. [2022-07-21 08:53:24,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 269.0) internal successors, (2421), 9 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:24,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 318.0) internal successors, (3180), 10 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:24,232 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 318.0) internal successors, (3180), 10 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:24,232 INFO L186 Difference]: Start difference. First operand has 315 places, 303 transitions, 780 flow. Second operand 9 states and 2421 transitions. [2022-07-21 08:53:24,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 319 transitions, 882 flow [2022-07-21 08:53:24,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 319 transitions, 858 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-07-21 08:53:24,242 INFO L242 Difference]: Finished difference. Result has 320 places, 309 transitions, 806 flow [2022-07-21 08:53:24,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=806, PETRI_PLACES=320, PETRI_TRANSITIONS=309} [2022-07-21 08:53:24,244 INFO L279 CegarLoopForPetriNet]: 277 programPoint places, 43 predicate places. [2022-07-21 08:53:24,245 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 309 transitions, 806 flow [2022-07-21 08:53:24,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 267.75) internal successors, (2142), 8 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:24,247 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:53:24,249 INFO L200 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:53:24,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-21 08:53:24,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:53:24,472 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:53:24,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:53:24,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1090462563, now seen corresponding path program 4 times [2022-07-21 08:53:24,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:53:24,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172222184] [2022-07-21 08:53:24,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:53:24,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:53:24,598 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 08:53:24,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063457243] [2022-07-21 08:53:24,598 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 08:53:24,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:53:24,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:53:24,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:53:24,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 08:53:25,455 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 08:53:25,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 08:53:25,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 3372 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 08:53:25,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:53:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7883 backedges. 0 proven. 5526 refuted. 0 times theorem prover too weak. 2357 trivial. 0 not checked. [2022-07-21 08:53:26,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:53:27,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7883 backedges. 0 proven. 5526 refuted. 0 times theorem prover too weak. 2357 trivial. 0 not checked. [2022-07-21 08:53:27,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:53:27,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172222184] [2022-07-21 08:53:27,555 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 08:53:27,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063457243] [2022-07-21 08:53:27,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063457243] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:53:27,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 08:53:27,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-07-21 08:53:27,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637835300] [2022-07-21 08:53:27,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 08:53:27,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 08:53:27,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:53:27,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 08:53:27,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:53:27,566 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 318 [2022-07-21 08:53:27,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 309 transitions, 806 flow. Second operand has 16 states, 16 states have (on average 268.375) internal successors, (4294), 16 states have internal predecessors, (4294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:27,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:53:27,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 318 [2022-07-21 08:53:27,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:53:28,752 INFO L129 PetriNetUnfolder]: 25/2321 cut-off events. [2022-07-21 08:53:28,752 INFO L130 PetriNetUnfolder]: For 378/386 co-relation queries the response was YES. [2022-07-21 08:53:28,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3061 conditions, 2321 events. 25/2321 cut-off events. For 378/386 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1795 event pairs, 0 based on Foata normal form. 4/2296 useless extension candidates. Maximal degree in co-relation 3043. Up to 70 conditions per place. [2022-07-21 08:53:28,762 INFO L132 encePairwiseOnDemand]: 312/318 looper letters, 45 selfloop transitions, 21 changer transitions 0/351 dead transitions. [2022-07-21 08:53:28,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 351 transitions, 1082 flow [2022-07-21 08:53:28,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:53:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:53:28,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5635 transitions. [2022-07-21 08:53:28,776 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8438155136268344 [2022-07-21 08:53:28,777 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5635 transitions. [2022-07-21 08:53:28,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5635 transitions. [2022-07-21 08:53:28,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:53:28,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5635 transitions. [2022-07-21 08:53:28,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 268.3333333333333) internal successors, (5635), 21 states have internal predecessors, (5635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:28,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 318.0) internal successors, (6996), 22 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:28,810 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 318.0) internal successors, (6996), 22 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:28,810 INFO L186 Difference]: Start difference. First operand has 320 places, 309 transitions, 806 flow. Second operand 21 states and 5635 transitions. [2022-07-21 08:53:28,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 351 transitions, 1082 flow [2022-07-21 08:53:28,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 351 transitions, 1068 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-07-21 08:53:28,820 INFO L242 Difference]: Finished difference. Result has 344 places, 322 transitions, 930 flow [2022-07-21 08:53:28,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=930, PETRI_PLACES=344, PETRI_TRANSITIONS=322} [2022-07-21 08:53:28,822 INFO L279 CegarLoopForPetriNet]: 277 programPoint places, 67 predicate places. [2022-07-21 08:53:28,822 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 322 transitions, 930 flow [2022-07-21 08:53:28,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 268.375) internal successors, (4294), 16 states have internal predecessors, (4294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:53:28,824 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:53:28,825 INFO L200 CegarLoopForPetriNet]: trace histogram [49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:53:28,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 08:53:29,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:53:29,041 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:53:29,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:53:29,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1395941731, now seen corresponding path program 5 times [2022-07-21 08:53:29,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:53:29,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103185688] [2022-07-21 08:53:29,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:53:29,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:53:29,331 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 08:53:29,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228060969] [2022-07-21 08:53:29,331 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-21 08:53:29,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:53:29,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:53:29,333 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:53:29,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process