./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_81-list_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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:18:07,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:18:07,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:18:07,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:18:07,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:18:07,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:18:07,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:18:07,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:18:07,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:18:07,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:18:07,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:18:07,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:18:07,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:18:07,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:18:07,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:18:07,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:18:07,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:18:07,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:18:07,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:18:07,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:18:07,304 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:18:07,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:18:07,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:18:07,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:18:07,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:18:07,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:18:07,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:18:07,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:18:07,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:18:07,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:18:07,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:18:07,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:18:07,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:18:07,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:18:07,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:18:07,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:18:07,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:18:07,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:18:07,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:18:07,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:18:07,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:18:07,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:18:07,323 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:18:07,350 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:18:07,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:18:07,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:18:07,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:18:07,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:18:07,352 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:18:07,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:18:07,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:18:07,353 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:18:07,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:18:07,354 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:18:07,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:18:07,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:18:07,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:18:07,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:18:07,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:18:07,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:18:07,355 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:18:07,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:18:07,356 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:18:07,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:18:07,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:18:07,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:18:07,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:18:07,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:18:07,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:18:07,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:18:07,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:18:07,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:18:07,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:18:07,359 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:18:07,359 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:18:07,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:18:07,359 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2022-07-12 10:18:07,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:18:07,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:18:07,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:18:07,620 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:18:07,622 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:18:07,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-07-12 10:18:07,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c3112607/2558d86b99f744a3b253b27e19537e5c/FLAGdaf53096a [2022-07-12 10:18:08,174 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:18:08,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-07-12 10:18:08,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c3112607/2558d86b99f744a3b253b27e19537e5c/FLAGdaf53096a [2022-07-12 10:18:08,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c3112607/2558d86b99f744a3b253b27e19537e5c [2022-07-12 10:18:08,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:18:08,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:18:08,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:18:08,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:18:08,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:18:08,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:18:08" (1/1) ... [2022-07-12 10:18:08,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d70426e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:18:08, skipping insertion in model container [2022-07-12 10:18:08,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:18:08" (1/1) ... [2022-07-12 10:18:08,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:18:08,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:18:09,092 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_81-list_racing.i[47038,47051] [2022-07-12 10:18:09,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:18:09,137 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:18:09,171 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_81-list_racing.i[47038,47051] [2022-07-12 10:18:09,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:18:09,240 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:18:09,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:18:09 WrapperNode [2022-07-12 10:18:09,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:18:09,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:18:09,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:18:09,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:18:09,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:18:09" (1/1) ... [2022-07-12 10:18:09,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:18:09" (1/1) ... [2022-07-12 10:18:09,290 INFO L137 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 204 [2022-07-12 10:18:09,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:18:09,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:18:09,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:18:09,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:18:09,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:18:09" (1/1) ... [2022-07-12 10:18:09,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:18:09" (1/1) ... [2022-07-12 10:18:09,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:18:09" (1/1) ... [2022-07-12 10:18:09,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:18:09" (1/1) ... [2022-07-12 10:18:09,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:18:09" (1/1) ... [2022-07-12 10:18:09,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:18:09" (1/1) ... [2022-07-12 10:18:09,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:18:09" (1/1) ... [2022-07-12 10:18:09,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:18:09,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:18:09,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:18:09,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:18:09,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:18:09" (1/1) ... [2022-07-12 10:18:09,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:18:09,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:18:09,353 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) [2022-07-12 10:18:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:18:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:18:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-07-12 10:18:09,381 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-07-12 10:18:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:18:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:18:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-07-12 10:18:09,381 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-07-12 10:18:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:18:09,382 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-12 10:18:09,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:18:09,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:18:09,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:18:09,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:18:09,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:18:09,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:18:09,383 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:18:09,371 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 [2022-07-12 10:18:09,500 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:18:09,502 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:18:09,751 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:18:09,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:18:09,761 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-12 10:18:09,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:18:09 BoogieIcfgContainer [2022-07-12 10:18:09,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:18:09,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:18:09,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:18:09,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:18:09,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:18:08" (1/3) ... [2022-07-12 10:18:09,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571512b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:18:09, skipping insertion in model container [2022-07-12 10:18:09,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:18:09" (2/3) ... [2022-07-12 10:18:09,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571512b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:18:09, skipping insertion in model container [2022-07-12 10:18:09,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:18:09" (3/3) ... [2022-07-12 10:18:09,770 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2022-07-12 10:18:09,774 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:18:09,780 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:18:09,780 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:18:09,781 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:18:09,869 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-12 10:18:09,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 202 places, 220 transitions, 462 flow [2022-07-12 10:18:10,044 INFO L129 PetriNetUnfolder]: 52/414 cut-off events. [2022-07-12 10:18:10,044 INFO L130 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-07-12 10:18:10,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 414 events. 52/414 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1661 event pairs, 0 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 213. Up to 8 conditions per place. [2022-07-12 10:18:10,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 220 transitions, 462 flow [2022-07-12 10:18:10,062 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 218 transitions, 452 flow [2022-07-12 10:18:10,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:18:10,076 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@25b26fe6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2348d065 [2022-07-12 10:18:10,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:18:10,090 INFO L129 PetriNetUnfolder]: 7/119 cut-off events. [2022-07-12 10:18:10,091 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:18:10,091 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:18:10,092 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] [2022-07-12 10:18:10,092 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 1 more)] === [2022-07-12 10:18:10,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:18:10,096 INFO L85 PathProgramCache]: Analyzing trace with hash 621174435, now seen corresponding path program 1 times [2022-07-12 10:18:10,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:18:10,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905770609] [2022-07-12 10:18:10,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:18:10,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:18:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:18:10,213 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:18:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:18:10,288 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:18:10,290 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:18:10,290 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-12 10:18:10,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-12 10:18:10,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-12 10:18:10,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-12 10:18:10,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:18:10,293 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-12 10:18:10,297 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:18:10,297 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-12 10:18:10,355 INFO L135 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-07-12 10:18:10,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 307 places, 340 transitions, 728 flow [2022-07-12 10:18:10,558 INFO L129 PetriNetUnfolder]: 191/1219 cut-off events. [2022-07-12 10:18:10,558 INFO L130 PetriNetUnfolder]: For 72/100 co-relation queries the response was YES. [2022-07-12 10:18:10,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 1219 events. 191/1219 cut-off events. For 72/100 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 7632 event pairs, 2 based on Foata normal form. 0/1029 useless extension candidates. Maximal degree in co-relation 769. Up to 32 conditions per place. [2022-07-12 10:18:10,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 340 transitions, 728 flow [2022-07-12 10:18:10,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 307 places, 340 transitions, 728 flow [2022-07-12 10:18:10,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:18:10,586 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@25b26fe6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2348d065 [2022-07-12 10:18:10,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-12 10:18:10,609 INFO L129 PetriNetUnfolder]: 17/251 cut-off events. [2022-07-12 10:18:10,609 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:18:10,609 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:18:10,610 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 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] [2022-07-12 10:18:10,610 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 2 more)] === [2022-07-12 10:18:10,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:18:10,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1276034956, now seen corresponding path program 1 times [2022-07-12 10:18:10,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:18:10,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449000772] [2022-07-12 10:18:10,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:18:10,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:18:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:18:10,665 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:18:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:18:10,702 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:18:10,702 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:18:10,703 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-12 10:18:10,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-12 10:18:10,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-12 10:18:10,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-12 10:18:10,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-12 10:18:10,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:18:10,704 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-12 10:18:10,704 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:18:10,704 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-12 10:18:10,818 INFO L135 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-07-12 10:18:10,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 412 places, 460 transitions, 998 flow [2022-07-12 10:18:11,750 INFO L129 PetriNetUnfolder]: 664/3388 cut-off events. [2022-07-12 10:18:11,750 INFO L130 PetriNetUnfolder]: For 419/475 co-relation queries the response was YES. [2022-07-12 10:18:11,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3839 conditions, 3388 events. 664/3388 cut-off events. For 419/475 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 26264 event pairs, 64 based on Foata normal form. 0/2886 useless extension candidates. Maximal degree in co-relation 2215. Up to 192 conditions per place. [2022-07-12 10:18:11,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 412 places, 460 transitions, 998 flow [2022-07-12 10:18:11,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 412 places, 460 transitions, 998 flow [2022-07-12 10:18:11,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:18:11,855 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@25b26fe6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2348d065 [2022-07-12 10:18:11,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-12 10:18:11,896 INFO L129 PetriNetUnfolder]: 44/517 cut-off events. [2022-07-12 10:18:11,897 INFO L130 PetriNetUnfolder]: For 22/36 co-relation queries the response was YES. [2022-07-12 10:18:11,897 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:18:11,897 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:18:11,897 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)] === [2022-07-12 10:18:11,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:18:11,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1807325972, now seen corresponding path program 1 times [2022-07-12 10:18:11,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:18:11,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150281860] [2022-07-12 10:18:11,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:18:11,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:18:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:18:11,926 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:18:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:18:11,952 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:18:11,952 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:18:11,952 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-07-12 10:18:11,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-12 10:18:11,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-07-12 10:18:11,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-07-12 10:18:11,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-12 10:18:11,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-12 10:18:11,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:18:11,953 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-12 10:18:11,954 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:18:11,954 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-12 10:18:12,009 INFO L135 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-07-12 10:18:12,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 517 places, 580 transitions, 1272 flow [2022-07-12 10:18:15,688 INFO L129 PetriNetUnfolder]: 2659/10701 cut-off events. [2022-07-12 10:18:15,689 INFO L130 PetriNetUnfolder]: For 2144/2239 co-relation queries the response was YES. [2022-07-12 10:18:16,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12866 conditions, 10701 events. 2659/10701 cut-off events. For 2144/2239 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 98820 event pairs, 626 based on Foata normal form. 0/9268 useless extension candidates. Maximal degree in co-relation 6876. Up to 1024 conditions per place. [2022-07-12 10:18:16,043 INFO L82 GeneralOperation]: Start removeDead. Operand has 517 places, 580 transitions, 1272 flow [2022-07-12 10:18:16,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 517 places, 580 transitions, 1272 flow [2022-07-12 10:18:16,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:18:16,332 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@25b26fe6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2348d065 [2022-07-12 10:18:16,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-12 10:18:16,376 INFO L129 PetriNetUnfolder]: 46/534 cut-off events. [2022-07-12 10:18:16,377 INFO L130 PetriNetUnfolder]: For 25/39 co-relation queries the response was YES. [2022-07-12 10:18:16,377 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:18:16,377 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:18:16,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:18:16,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:18:16,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1567120559, now seen corresponding path program 1 times [2022-07-12 10:18:16,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:18:16,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624355350] [2022-07-12 10:18:16,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:18:16,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:18:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:18:16,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:18:16,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:18:16,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624355350] [2022-07-12 10:18:16,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624355350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:18:16,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:18:16,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:18:16,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714544357] [2022-07-12 10:18:16,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:18:16,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:18:16,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:18:16,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:18:16,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:18:16,535 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 493 out of 580 [2022-07-12 10:18:16,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 580 transitions, 1272 flow. Second operand has 3 states, 3 states have (on average 494.6666666666667) internal successors, (1484), 3 states have internal predecessors, (1484), 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) [2022-07-12 10:18:16,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:18:16,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 493 of 580 [2022-07-12 10:18:16,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:18:20,213 INFO L129 PetriNetUnfolder]: 1860/9545 cut-off events. [2022-07-12 10:18:20,213 INFO L130 PetriNetUnfolder]: For 6471/7978 co-relation queries the response was YES. [2022-07-12 10:18:20,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13785 conditions, 9545 events. 1860/9545 cut-off events. For 6471/7978 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 92470 event pairs, 324 based on Foata normal form. 12758/21645 useless extension candidates. Maximal degree in co-relation 7288. Up to 2088 conditions per place. [2022-07-12 10:18:20,718 INFO L132 encePairwiseOnDemand]: 525/580 looper letters, 33 selfloop transitions, 2 changer transitions 0/528 dead transitions. [2022-07-12 10:18:20,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 528 transitions, 1238 flow [2022-07-12 10:18:20,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:18:20,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:18:20,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1568 transitions. [2022-07-12 10:18:20,735 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9011494252873563 [2022-07-12 10:18:20,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1568 transitions. [2022-07-12 10:18:20,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1568 transitions. [2022-07-12 10:18:20,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:18:20,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1568 transitions. [2022-07-12 10:18:20,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 522.6666666666666) internal successors, (1568), 3 states have internal predecessors, (1568), 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) [2022-07-12 10:18:20,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 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) [2022-07-12 10:18:20,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 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) [2022-07-12 10:18:20,758 INFO L186 Difference]: Start difference. First operand has 517 places, 580 transitions, 1272 flow. Second operand 3 states and 1568 transitions. [2022-07-12 10:18:20,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 528 transitions, 1238 flow [2022-07-12 10:18:20,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 528 transitions, 1238 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:18:20,782 INFO L242 Difference]: Finished difference. Result has 516 places, 525 transitions, 1172 flow [2022-07-12 10:18:20,785 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1172, PETRI_PLACES=516, PETRI_TRANSITIONS=525} [2022-07-12 10:18:20,787 INFO L279 CegarLoopForPetriNet]: 517 programPoint places, -1 predicate places. [2022-07-12 10:18:20,788 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 525 transitions, 1172 flow [2022-07-12 10:18:20,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 494.6666666666667) internal successors, (1484), 3 states have internal predecessors, (1484), 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) [2022-07-12 10:18:20,789 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:18:20,789 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:18:20,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:18:20,789 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 4 more)] === [2022-07-12 10:18:20,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:18:20,790 INFO L85 PathProgramCache]: Analyzing trace with hash 918640571, now seen corresponding path program 1 times [2022-07-12 10:18:20,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:18:20,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512146918] [2022-07-12 10:18:20,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:18:20,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:18:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:18:20,838 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:18:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:18:20,887 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:18:20,893 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:18:20,894 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-07-12 10:18:20,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-12 10:18:20,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-07-12 10:18:20,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-07-12 10:18:20,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-07-12 10:18:20,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-12 10:18:20,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-12 10:18:20,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:18:20,896 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 10:18:20,897 WARN L231 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:18:20,897 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-07-12 10:18:20,972 INFO L135 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-07-12 10:18:20,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 622 places, 700 transitions, 1550 flow [2022-07-12 10:18:38,603 INFO L129 PetriNetUnfolder]: 11792/39142 cut-off events. [2022-07-12 10:18:38,603 INFO L130 PetriNetUnfolder]: For 10450/10586 co-relation queries the response was YES. [2022-07-12 10:18:41,256 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49568 conditions, 39142 events. 11792/39142 cut-off events. For 10450/10586 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 428792 event pairs, 4296 based on Foata normal form. 0/34440 useless extension candidates. Maximal degree in co-relation 24907. Up to 5120 conditions per place. [2022-07-12 10:18:41,256 INFO L82 GeneralOperation]: Start removeDead. Operand has 622 places, 700 transitions, 1550 flow [2022-07-12 10:18:42,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 622 places, 700 transitions, 1550 flow [2022-07-12 10:18:42,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:18:42,322 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@25b26fe6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2348d065 [2022-07-12 10:18:42,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-12 10:18:42,356 INFO L129 PetriNetUnfolder]: 49/555 cut-off events. [2022-07-12 10:18:42,357 INFO L130 PetriNetUnfolder]: For 25/39 co-relation queries the response was YES. [2022-07-12 10:18:42,357 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:18:42,357 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:18:42,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2022-07-12 10:18:42,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:18:42,358 INFO L85 PathProgramCache]: Analyzing trace with hash -212499005, now seen corresponding path program 1 times [2022-07-12 10:18:42,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:18:42,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588847926] [2022-07-12 10:18:42,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:18:42,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:18:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:18:42,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:18:42,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:18:42,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588847926] [2022-07-12 10:18:42,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588847926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:18:42,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:18:42,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:18:42,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670356418] [2022-07-12 10:18:42,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:18:42,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:18:42,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:18:42,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:18:42,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:18:42,427 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 594 out of 700 [2022-07-12 10:18:42,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 700 transitions, 1550 flow. Second operand has 3 states, 3 states have (on average 595.6666666666666) internal successors, (1787), 3 states have internal predecessors, (1787), 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) [2022-07-12 10:18:42,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:18:42,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 594 of 700 [2022-07-12 10:18:42,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:18:57,553 INFO L129 PetriNetUnfolder]: 9321/36222 cut-off events. [2022-07-12 10:18:57,553 INFO L130 PetriNetUnfolder]: For 31268/34086 co-relation queries the response was YES. [2022-07-12 10:18:59,270 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56923 conditions, 36222 events. 9321/36222 cut-off events. For 31268/34086 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 416170 event pairs, 2174 based on Foata normal form. 63460/97401 useless extension candidates. Maximal degree in co-relation 28152. Up to 10295 conditions per place. [2022-07-12 10:19:00,057 INFO L132 encePairwiseOnDemand]: 633/700 looper letters, 39 selfloop transitions, 2 changer transitions 0/635 dead transitions. [2022-07-12 10:19:00,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 635 transitions, 1502 flow [2022-07-12 10:19:00,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:19:00,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:19:00,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1889 transitions. [2022-07-12 10:19:00,060 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8995238095238095 [2022-07-12 10:19:00,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1889 transitions. [2022-07-12 10:19:00,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1889 transitions. [2022-07-12 10:19:00,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:19:00,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1889 transitions. [2022-07-12 10:19:00,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 629.6666666666666) internal successors, (1889), 3 states have internal predecessors, (1889), 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) [2022-07-12 10:19:00,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 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) [2022-07-12 10:19:00,069 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 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) [2022-07-12 10:19:00,069 INFO L186 Difference]: Start difference. First operand has 622 places, 700 transitions, 1550 flow. Second operand 3 states and 1889 transitions. [2022-07-12 10:19:00,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 635 transitions, 1502 flow [2022-07-12 10:19:00,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 635 transitions, 1502 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:19:00,085 INFO L242 Difference]: Finished difference. Result has 620 places, 632 transitions, 1424 flow [2022-07-12 10:19:00,086 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1424, PETRI_PLACES=620, PETRI_TRANSITIONS=632} [2022-07-12 10:19:00,086 INFO L279 CegarLoopForPetriNet]: 622 programPoint places, -2 predicate places. [2022-07-12 10:19:00,086 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 632 transitions, 1424 flow [2022-07-12 10:19:00,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 595.6666666666666) internal successors, (1787), 3 states have internal predecessors, (1787), 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) [2022-07-12 10:19:00,087 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:19:00,088 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:19:00,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:19:00,088 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2022-07-12 10:19:00,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:19:00,088 INFO L85 PathProgramCache]: Analyzing trace with hash -874421531, now seen corresponding path program 1 times [2022-07-12 10:19:00,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:19:00,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113091159] [2022-07-12 10:19:00,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:19:00,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:19:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:19:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:19:00,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:19:00,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113091159] [2022-07-12 10:19:00,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113091159] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:19:00,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488841123] [2022-07-12 10:19:00,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:19:00,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:19:00,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:19:00,134 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) [2022-07-12 10:19:00,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:19:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:19:00,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 10:19:00,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:19:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:19:00,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:19:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:19:00,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488841123] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:19:00,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:19:00,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-07-12 10:19:00,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683237566] [2022-07-12 10:19:00,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:19:00,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:19:00,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:19:00,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:19:00,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:19:00,414 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 700 [2022-07-12 10:19:00,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 632 transitions, 1424 flow. Second operand has 10 states, 10 states have (on average 595.4) internal successors, (5954), 10 states have internal predecessors, (5954), 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) [2022-07-12 10:19:00,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:19:00,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 700 [2022-07-12 10:19:00,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand