./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.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 e12b29ddb474fc17e74c2b71eb245022640b1de10fdbbb130c7f22e13cd3653f --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:42:15,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:42:15,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:42:15,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:42:15,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:42:15,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:42:15,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:42:15,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:42:15,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:42:15,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:42:15,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:42:15,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:42:15,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:42:15,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:42:15,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:42:15,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:42:15,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:42:15,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:42:15,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:42:15,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:42:15,247 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:42:15,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:42:15,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:42:15,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:42:15,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:42:15,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:42:15,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:42:15,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:42:15,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:42:15,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:42:15,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:42:15,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:42:15,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:42:15,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:42:15,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:42:15,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:42:15,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:42:15,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:42:15,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:42:15,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:42:15,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:42:15,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:42:15,262 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:42:15,280 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:42:15,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:42:15,280 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:42:15,281 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:42:15,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:42:15,282 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:42:15,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:42:15,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:42:15,283 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:42:15,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:42:15,284 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:42:15,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:42:15,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:42:15,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:42:15,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:42:15,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:42:15,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:42:15,285 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:42:15,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:42:15,286 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:42:15,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:42:15,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:42:15,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:42:15,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:42:15,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:42:15,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:42:15,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:42:15,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:42:15,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:42:15,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:42:15,288 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:42:15,289 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:42:15,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:42:15,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e12b29ddb474fc17e74c2b71eb245022640b1de10fdbbb130c7f22e13cd3653f [2022-07-13 21:42:15,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:42:15,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:42:15,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:42:15,546 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:42:15,547 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:42:15,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i [2022-07-13 21:42:15,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4003d568c/375c121627c54168979114c215e21bd4/FLAGda6fab3a5 [2022-07-13 21:42:16,080 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:42:16,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i [2022-07-13 21:42:16,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4003d568c/375c121627c54168979114c215e21bd4/FLAGda6fab3a5 [2022-07-13 21:42:16,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4003d568c/375c121627c54168979114c215e21bd4 [2022-07-13 21:42:16,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:42:16,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:42:16,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:42:16,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:42:16,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:42:16,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:42:16" (1/1) ... [2022-07-13 21:42:16,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54734291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:16, skipping insertion in model container [2022-07-13 21:42:16,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:42:16" (1/1) ... [2022-07-13 21:42:16,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:42:16,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:42:16,430 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i[31166,31179] [2022-07-13 21:42:16,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:42:16,461 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:42:16,568 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i[31166,31179] [2022-07-13 21:42:16,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:42:16,612 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:42:16,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:16 WrapperNode [2022-07-13 21:42:16,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:42:16,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:42:16,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:42:16,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:42:16,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:16" (1/1) ... [2022-07-13 21:42:16,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:16" (1/1) ... [2022-07-13 21:42:16,678 INFO L137 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 187 [2022-07-13 21:42:16,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:42:16,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:42:16,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:42:16,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:42:16,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:16" (1/1) ... [2022-07-13 21:42:16,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:16" (1/1) ... [2022-07-13 21:42:16,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:16" (1/1) ... [2022-07-13 21:42:16,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:16" (1/1) ... [2022-07-13 21:42:16,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:16" (1/1) ... [2022-07-13 21:42:16,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:16" (1/1) ... [2022-07-13 21:42:16,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:16" (1/1) ... [2022-07-13 21:42:16,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:42:16,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:42:16,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:42:16,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:42:16,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:16" (1/1) ... [2022-07-13 21:42:16,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:42:16,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:42:16,744 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) [2022-07-13 21:42:16,755 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 [2022-07-13 21:42:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 21:42:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-13 21:42:16,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-13 21:42:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:42:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:42:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:42:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:42:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:42:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:42:16,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:42:16,777 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:42:16,870 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:42:16,872 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:42:17,214 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:42:17,350 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:42:17,350 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-13 21:42:17,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:42:17 BoogieIcfgContainer [2022-07-13 21:42:17,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:42:17,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:42:17,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:42:17,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:42:17,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:42:16" (1/3) ... [2022-07-13 21:42:17,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba4c8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:42:17, skipping insertion in model container [2022-07-13 21:42:17,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:16" (2/3) ... [2022-07-13 21:42:17,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba4c8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:42:17, skipping insertion in model container [2022-07-13 21:42:17,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:42:17" (3/3) ... [2022-07-13 21:42:17,361 INFO L111 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-1.i [2022-07-13 21:42:17,366 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:42:17,375 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:42:17,376 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 21:42:17,376 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:42:17,470 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:42:17,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 124 transitions, 253 flow [2022-07-13 21:42:17,575 INFO L129 PetriNetUnfolder]: 11/135 cut-off events. [2022-07-13 21:42:17,575 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:42:17,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 11/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 139 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2022-07-13 21:42:17,581 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 124 transitions, 253 flow [2022-07-13 21:42:17,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 124 transitions, 253 flow [2022-07-13 21:42:17,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:42:17,610 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@2bbe4c14, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f36c62f [2022-07-13 21:42:17,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-13 21:42:17,631 INFO L129 PetriNetUnfolder]: 2/58 cut-off events. [2022-07-13 21:42:17,632 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:42:17,633 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:17,634 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] [2022-07-13 21:42:17,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:42:17,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:17,642 INFO L85 PathProgramCache]: Analyzing trace with hash 467826557, now seen corresponding path program 1 times [2022-07-13 21:42:17,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:17,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330199668] [2022-07-13 21:42:17,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:17,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:17,796 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:42:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:17,866 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:42:17,868 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:42:17,870 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-07-13 21:42:17,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-07-13 21:42:17,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-07-13 21:42:17,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:42:17,873 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-13 21:42:17,877 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:42:17,877 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-13 21:42:17,957 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:42:17,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 195 places, 209 transitions, 430 flow [2022-07-13 21:42:18,046 INFO L129 PetriNetUnfolder]: 21/233 cut-off events. [2022-07-13 21:42:18,046 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 21:42:18,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 233 events. 21/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 471 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 181. Up to 6 conditions per place. [2022-07-13 21:42:18,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 209 transitions, 430 flow [2022-07-13 21:42:18,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 209 transitions, 430 flow [2022-07-13 21:42:18,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:42:18,065 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@2bbe4c14, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f36c62f [2022-07-13 21:42:18,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 21:42:18,081 INFO L129 PetriNetUnfolder]: 7/102 cut-off events. [2022-07-13 21:42:18,082 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 21:42:18,082 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:18,082 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-07-13 21:42:18,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 21:42:18,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:18,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1595016611, now seen corresponding path program 1 times [2022-07-13 21:42:18,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:18,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947948446] [2022-07-13 21:42:18,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:18,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:18,139 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:42:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:18,169 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:42:18,171 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:42:18,172 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-13 21:42:18,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-13 21:42:18,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-07-13 21:42:18,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-13 21:42:18,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:42:18,173 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-13 21:42:18,174 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:42:18,174 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-13 21:42:18,259 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:42:18,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 273 places, 294 transitions, 609 flow [2022-07-13 21:42:18,352 INFO L129 PetriNetUnfolder]: 31/331 cut-off events. [2022-07-13 21:42:18,353 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-13 21:42:18,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 331 events. 31/331 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 913 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 265. Up to 8 conditions per place. [2022-07-13 21:42:18,362 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 294 transitions, 609 flow [2022-07-13 21:42:18,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 294 transitions, 609 flow [2022-07-13 21:42:18,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:42:18,373 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@2bbe4c14, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f36c62f [2022-07-13 21:42:18,374 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-13 21:42:18,392 INFO L129 PetriNetUnfolder]: 11/149 cut-off events. [2022-07-13 21:42:18,393 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-13 21:42:18,393 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:18,394 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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] [2022-07-13 21:42:18,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-13 21:42:18,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:18,396 INFO L85 PathProgramCache]: Analyzing trace with hash 490396723, now seen corresponding path program 1 times [2022-07-13 21:42:18,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:18,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928153410] [2022-07-13 21:42:18,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:18,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:18,440 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:42:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:18,470 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:42:18,470 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:42:18,470 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-13 21:42:18,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-13 21:42:18,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-07-13 21:42:18,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-13 21:42:18,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-13 21:42:18,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:42:18,471 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-13 21:42:18,472 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:42:18,472 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-13 21:42:18,568 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:42:18,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 351 places, 379 transitions, 790 flow [2022-07-13 21:42:18,656 INFO L129 PetriNetUnfolder]: 41/429 cut-off events. [2022-07-13 21:42:18,657 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-13 21:42:18,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 429 events. 41/429 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1440 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 349. Up to 10 conditions per place. [2022-07-13 21:42:18,667 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 379 transitions, 790 flow [2022-07-13 21:42:18,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 379 transitions, 790 flow [2022-07-13 21:42:18,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:42:18,679 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@2bbe4c14, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f36c62f [2022-07-13 21:42:18,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-13 21:42:18,711 INFO L129 PetriNetUnfolder]: 14/197 cut-off events. [2022-07-13 21:42:18,711 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-13 21:42:18,711 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:18,711 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 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] [2022-07-13 21:42:18,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-13 21:42:18,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:18,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1122311798, now seen corresponding path program 1 times [2022-07-13 21:42:18,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:18,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426638597] [2022-07-13 21:42:18,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:18,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:18,769 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:42:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:18,808 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:42:18,809 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:42:18,809 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-07-13 21:42:18,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-13 21:42:18,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-07-13 21:42:18,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-07-13 21:42:18,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-13 21:42:18,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-13 21:42:18,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:42:18,810 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-13 21:42:18,811 WARN L231 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:42:18,811 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-07-13 21:42:18,908 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:42:18,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 429 places, 464 transitions, 973 flow [2022-07-13 21:42:19,050 INFO L129 PetriNetUnfolder]: 51/527 cut-off events. [2022-07-13 21:42:19,051 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-13 21:42:19,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 527 events. 51/527 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1952 event pairs, 0 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 442. Up to 12 conditions per place. [2022-07-13 21:42:19,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 429 places, 464 transitions, 973 flow [2022-07-13 21:42:19,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 429 places, 464 transitions, 973 flow [2022-07-13 21:42:19,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:42:19,079 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@2bbe4c14, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f36c62f [2022-07-13 21:42:19,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-13 21:42:19,129 INFO L129 PetriNetUnfolder]: 19/266 cut-off events. [2022-07-13 21:42:19,130 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-13 21:42:19,130 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:19,130 INFO L200 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:42:19,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:42:19,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:19,132 INFO L85 PathProgramCache]: Analyzing trace with hash -120235011, now seen corresponding path program 1 times [2022-07-13 21:42:19,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:19,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222955513] [2022-07-13 21:42:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:19,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:19,188 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:42:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:19,226 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:42:19,227 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:42:19,227 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-07-13 21:42:19,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-13 21:42:19,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-07-13 21:42:19,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-07-13 21:42:19,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-07-13 21:42:19,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-13 21:42:19,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-13 21:42:19,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:42:19,230 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-13 21:42:19,230 WARN L231 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:42:19,231 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-07-13 21:42:19,368 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:42:19,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 507 places, 549 transitions, 1158 flow [2022-07-13 21:42:19,558 INFO L129 PetriNetUnfolder]: 61/625 cut-off events. [2022-07-13 21:42:19,558 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-07-13 21:42:19,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 625 events. 61/625 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2515 event pairs, 0 based on Foata normal form. 0/551 useless extension candidates. Maximal degree in co-relation 546. Up to 14 conditions per place. [2022-07-13 21:42:19,606 INFO L82 GeneralOperation]: Start removeDead. Operand has 507 places, 549 transitions, 1158 flow [2022-07-13 21:42:19,616 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 507 places, 549 transitions, 1158 flow [2022-07-13 21:42:19,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:42:19,618 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@2bbe4c14, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f36c62f [2022-07-13 21:42:19,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-13 21:42:19,669 INFO L129 PetriNetUnfolder]: 25/338 cut-off events. [2022-07-13 21:42:19,670 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-07-13 21:42:19,670 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:19,670 INFO L200 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:42:19,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-13 21:42:19,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:19,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2021763279, now seen corresponding path program 1 times [2022-07-13 21:42:19,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:19,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637884970] [2022-07-13 21:42:19,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:19,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:19,695 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:42:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:19,719 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:42:19,719 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:42:19,720 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-07-13 21:42:19,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2022-07-13 21:42:19,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2022-07-13 21:42:19,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-07-13 21:42:19,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-07-13 21:42:19,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-07-13 21:42:19,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2022-07-13 21:42:19,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2022-07-13 21:42:19,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:42:19,721 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-13 21:42:19,722 WARN L231 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:42:19,722 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-07-13 21:42:19,849 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:42:19,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 585 places, 634 transitions, 1345 flow [2022-07-13 21:42:20,142 INFO L129 PetriNetUnfolder]: 71/723 cut-off events. [2022-07-13 21:42:20,143 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-07-13 21:42:20,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 723 events. 71/723 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3085 event pairs, 0 based on Foata normal form. 0/637 useless extension candidates. Maximal degree in co-relation 651. Up to 16 conditions per place. [2022-07-13 21:42:20,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 585 places, 634 transitions, 1345 flow [2022-07-13 21:42:20,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 585 places, 634 transitions, 1345 flow [2022-07-13 21:42:20,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:42:20,189 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@2bbe4c14, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f36c62f [2022-07-13 21:42:20,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-07-13 21:42:20,271 INFO L129 PetriNetUnfolder]: 31/413 cut-off events. [2022-07-13 21:42:20,272 INFO L130 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-07-13 21:42:20,272 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:20,272 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] [2022-07-13 21:42:20,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-07-13 21:42:20,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:20,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1137585072, now seen corresponding path program 1 times [2022-07-13 21:42:20,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:20,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279816864] [2022-07-13 21:42:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:20,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:42:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:42:20,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:42:20,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279816864] [2022-07-13 21:42:20,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279816864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:42:20,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:42:20,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:42:20,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888421903] [2022-07-13 21:42:20,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:42:20,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:42:20,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:42:20,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:42:20,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:42:20,412 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 634 [2022-07-13 21:42:20,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 634 transitions, 1345 flow. Second operand has 3 states, 3 states have (on average 514.6666666666666) internal successors, (1544), 3 states have internal predecessors, (1544), 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) [2022-07-13 21:42:20,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:42:20,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 634 [2022-07-13 21:42:20,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand