./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-lit/fkp2013_variant-2.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 37f99419c791b8329e91533415d896c367c9197a331e0ac4d97f5b27dc6c2be9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:45:12,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:45:12,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:45:12,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:45:12,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:45:12,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:45:12,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:45:12,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:45:12,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:45:12,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:45:12,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:45:12,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:45:12,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:45:12,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:45:12,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:45:12,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:45:12,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:45:12,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:45:12,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:45:12,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:45:12,276 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:45:12,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:45:12,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:45:12,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:45:12,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:45:12,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:45:12,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:45:12,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:45:12,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:45:12,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:45:12,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:45:12,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:45:12,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:45:12,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:45:12,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:45:12,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:45:12,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:45:12,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:45:12,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:45:12,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:45:12,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:45:12,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:45:12,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:45:12,312 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:45:12,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:45:12,313 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:45:12,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:45:12,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:45:12,315 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:45:12,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:45:12,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:45:12,316 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:45:12,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:45:12,316 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:45:12,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:45:12,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:45:12,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:45:12,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:45:12,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:45:12,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:45:12,323 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:45:12,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:45:12,324 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:45:12,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:45:12,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:45:12,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:45:12,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:45:12,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:45:12,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:45:12,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:45:12,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:45:12,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:45:12,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:45:12,326 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:45:12,326 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:45:12,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:45:12,327 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37f99419c791b8329e91533415d896c367c9197a331e0ac4d97f5b27dc6c2be9 [2022-07-21 08:45:12,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:45:12,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:45:12,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:45:12,672 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:45:12,673 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:45:12,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i [2022-07-21 08:45:12,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b0bbbc4b/ee7c6f212c2d4e319ab96a2961d9703f/FLAGbd722efb9 [2022-07-21 08:45:13,250 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:45:13,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i [2022-07-21 08:45:13,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b0bbbc4b/ee7c6f212c2d4e319ab96a2961d9703f/FLAGbd722efb9 [2022-07-21 08:45:13,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b0bbbc4b/ee7c6f212c2d4e319ab96a2961d9703f [2022-07-21 08:45:13,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:45:13,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:45:13,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:45:13,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:45:13,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:45:13,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:45:13" (1/1) ... [2022-07-21 08:45:13,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1576073a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:13, skipping insertion in model container [2022-07-21 08:45:13,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:45:13" (1/1) ... [2022-07-21 08:45:13,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:45:13,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:45:13,974 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-lit/fkp2013_variant-2.i[30003,30016] [2022-07-21 08:45:13,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:45:14,003 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:45:14,053 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-lit/fkp2013_variant-2.i[30003,30016] [2022-07-21 08:45:14,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:45:14,108 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:45:14,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:14 WrapperNode [2022-07-21 08:45:14,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:45:14,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:45:14,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:45:14,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:45:14,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:14" (1/1) ... [2022-07-21 08:45:14,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:14" (1/1) ... [2022-07-21 08:45:14,176 INFO L137 Inliner]: procedures = 172, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2022-07-21 08:45:14,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:45:14,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:45:14,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:45:14,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:45:14,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:14" (1/1) ... [2022-07-21 08:45:14,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:14" (1/1) ... [2022-07-21 08:45:14,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:14" (1/1) ... [2022-07-21 08:45:14,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:14" (1/1) ... [2022-07-21 08:45:14,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:14" (1/1) ... [2022-07-21 08:45:14,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:14" (1/1) ... [2022-07-21 08:45:14,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:14" (1/1) ... [2022-07-21 08:45:14,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:45:14,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:45:14,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:45:14,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:45:14,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:14" (1/1) ... [2022-07-21 08:45:14,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:45:14,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:45:14,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:45:14,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:45:14,318 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-07-21 08:45:14,318 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-07-21 08:45:14,318 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-21 08:45:14,319 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-21 08:45:14,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:45:14,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:45:14,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:45:14,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:45:14,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:45:14,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:45:14,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:45:14,321 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:45:14,414 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:45:14,415 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:45:14,653 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:45:14,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:45:14,660 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 08:45:14,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:45:14 BoogieIcfgContainer [2022-07-21 08:45:14,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:45:14,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:45:14,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:45:14,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:45:14,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:45:13" (1/3) ... [2022-07-21 08:45:14,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48487018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:45:14, skipping insertion in model container [2022-07-21 08:45:14,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:14" (2/3) ... [2022-07-21 08:45:14,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48487018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:45:14, skipping insertion in model container [2022-07-21 08:45:14,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:45:14" (3/3) ... [2022-07-21 08:45:14,669 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013_variant-2.i [2022-07-21 08:45:14,674 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:45:14,683 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:45:14,683 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:45:14,684 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:45:14,726 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:45:14,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 80 transitions, 170 flow [2022-07-21 08:45:14,809 INFO L129 PetriNetUnfolder]: 4/93 cut-off events. [2022-07-21 08:45:14,810 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:45:14,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 93 events. 4/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 102 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2022-07-21 08:45:14,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 80 transitions, 170 flow [2022-07-21 08:45:14,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 79 transitions, 166 flow [2022-07-21 08:45:14,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:45:14,833 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@3db4fe4d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@56074dac [2022-07-21 08:45:14,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 08:45:14,846 INFO L129 PetriNetUnfolder]: 3/57 cut-off events. [2022-07-21 08:45:14,846 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:45:14,846 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:14,847 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] [2022-07-21 08:45:14,848 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:45:14,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:14,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1926868283, now seen corresponding path program 1 times [2022-07-21 08:45:14,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:14,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308942328] [2022-07-21 08:45:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:14,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:15,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:15,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308942328] [2022-07-21 08:45:15,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308942328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:15,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:15,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:45:15,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852973645] [2022-07-21 08:45:15,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:15,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:45:15,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:15,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:45:15,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:45:15,349 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 80 [2022-07-21 08:45:15,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 166 flow. Second operand has 9 states, 9 states have (on average 57.44444444444444) internal successors, (517), 9 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:15,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:15,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 80 [2022-07-21 08:45:15,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:15,585 INFO L129 PetriNetUnfolder]: 71/344 cut-off events. [2022-07-21 08:45:15,585 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-21 08:45:15,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 344 events. 71/344 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1900 event pairs, 14 based on Foata normal form. 4/311 useless extension candidates. Maximal degree in co-relation 467. Up to 38 conditions per place. [2022-07-21 08:45:15,590 INFO L132 encePairwiseOnDemand]: 68/80 looper letters, 28 selfloop transitions, 11 changer transitions 6/100 dead transitions. [2022-07-21 08:45:15,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 100 transitions, 304 flow [2022-07-21 08:45:15,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:45:15,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:45:15,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 672 transitions. [2022-07-21 08:45:15,606 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7636363636363637 [2022-07-21 08:45:15,607 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 672 transitions. [2022-07-21 08:45:15,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 672 transitions. [2022-07-21 08:45:15,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:15,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 672 transitions. [2022-07-21 08:45:15,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 61.09090909090909) internal successors, (672), 11 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:15,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:15,626 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:15,628 INFO L186 Difference]: Start difference. First operand has 82 places, 79 transitions, 166 flow. Second operand 11 states and 672 transitions. [2022-07-21 08:45:15,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 100 transitions, 304 flow [2022-07-21 08:45:15,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 100 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:45:15,635 INFO L242 Difference]: Finished difference. Result has 94 places, 80 transitions, 209 flow [2022-07-21 08:45:15,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=209, PETRI_PLACES=94, PETRI_TRANSITIONS=80} [2022-07-21 08:45:15,641 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2022-07-21 08:45:15,641 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 209 flow [2022-07-21 08:45:15,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 57.44444444444444) internal successors, (517), 9 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:15,642 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:15,642 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] [2022-07-21 08:45:15,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:45:15,643 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:45:15,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:15,644 INFO L85 PathProgramCache]: Analyzing trace with hash -2080092778, now seen corresponding path program 1 times [2022-07-21 08:45:15,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:15,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668759798] [2022-07-21 08:45:15,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:15,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:45:15,690 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:45:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:45:15,758 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:45:15,758 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:45:15,760 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-21 08:45:15,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-21 08:45:15,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-21 08:45:15,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-21 08:45:15,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:45:15,764 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 08:45:15,767 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-21 08:45:15,767 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-21 08:45:15,798 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:45:15,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 101 transitions, 226 flow [2022-07-21 08:45:15,820 INFO L129 PetriNetUnfolder]: 5/119 cut-off events. [2022-07-21 08:45:15,820 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:45:15,823 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 119 events. 5/119 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 128. Up to 6 conditions per place. [2022-07-21 08:45:15,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 101 transitions, 226 flow [2022-07-21 08:45:15,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 86 transitions, 187 flow [2022-07-21 08:45:15,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:45:15,836 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@3db4fe4d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@56074dac [2022-07-21 08:45:15,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-21 08:45:15,848 INFO L129 PetriNetUnfolder]: 3/58 cut-off events. [2022-07-21 08:45:15,848 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:45:15,848 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:15,849 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] [2022-07-21 08:45:15,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:45:15,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:15,854 INFO L85 PathProgramCache]: Analyzing trace with hash 51703260, now seen corresponding path program 1 times [2022-07-21 08:45:15,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:15,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176196413] [2022-07-21 08:45:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:15,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:16,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:16,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176196413] [2022-07-21 08:45:16,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176196413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:16,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:16,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:45:16,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207784464] [2022-07-21 08:45:16,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:16,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:45:16,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:16,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:45:16,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:45:16,068 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 101 [2022-07-21 08:45:16,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 187 flow. Second operand has 9 states, 9 states have (on average 71.44444444444444) internal successors, (643), 9 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:16,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:16,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 101 [2022-07-21 08:45:16,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:16,420 INFO L129 PetriNetUnfolder]: 429/1137 cut-off events. [2022-07-21 08:45:16,420 INFO L130 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-07-21 08:45:16,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1939 conditions, 1137 events. 429/1137 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8537 event pairs, 24 based on Foata normal form. 19/1036 useless extension candidates. Maximal degree in co-relation 1887. Up to 213 conditions per place. [2022-07-21 08:45:16,429 INFO L132 encePairwiseOnDemand]: 88/101 looper letters, 54 selfloop transitions, 14 changer transitions 6/133 dead transitions. [2022-07-21 08:45:16,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 133 transitions, 465 flow [2022-07-21 08:45:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:45:16,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:45:16,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 855 transitions. [2022-07-21 08:45:16,433 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7695769576957696 [2022-07-21 08:45:16,433 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 855 transitions. [2022-07-21 08:45:16,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 855 transitions. [2022-07-21 08:45:16,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:16,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 855 transitions. [2022-07-21 08:45:16,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 77.72727272727273) internal successors, (855), 11 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:16,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 101.0) internal successors, (1212), 12 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:16,439 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 101.0) internal successors, (1212), 12 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:16,439 INFO L186 Difference]: Start difference. First operand has 91 places, 86 transitions, 187 flow. Second operand 11 states and 855 transitions. [2022-07-21 08:45:16,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 133 transitions, 465 flow [2022-07-21 08:45:16,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 133 transitions, 462 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-21 08:45:16,443 INFO L242 Difference]: Finished difference. Result has 104 places, 91 transitions, 262 flow [2022-07-21 08:45:16,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=262, PETRI_PLACES=104, PETRI_TRANSITIONS=91} [2022-07-21 08:45:16,444 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 13 predicate places. [2022-07-21 08:45:16,444 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 91 transitions, 262 flow [2022-07-21 08:45:16,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.44444444444444) internal successors, (643), 9 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:16,445 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:16,445 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] [2022-07-21 08:45:16,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:45:16,445 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:45:16,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:16,446 INFO L85 PathProgramCache]: Analyzing trace with hash -492590774, now seen corresponding path program 1 times [2022-07-21 08:45:16,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:16,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593949804] [2022-07-21 08:45:16,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:16,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:45:16,480 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:45:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:45:16,501 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:45:16,502 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:45:16,502 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-21 08:45:16,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-21 08:45:16,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-21 08:45:16,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-07-21 08:45:16,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-21 08:45:16,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:45:16,504 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 08:45:16,508 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-07-21 08:45:16,509 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:45:16,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:45:16 BasicIcfg [2022-07-21 08:45:16,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:45:16,590 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:45:16,590 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:45:16,590 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:45:16,590 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:45:14" (3/4) ... [2022-07-21 08:45:16,592 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-21 08:45:16,642 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:45:16,642 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:45:16,642 INFO L158 Benchmark]: Toolchain (without parser) took 3049.58ms. Allocated memory was 50.3MB in the beginning and 94.4MB in the end (delta: 44.0MB). Free memory was 26.1MB in the beginning and 40.8MB in the end (delta: -14.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-07-21 08:45:16,643 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 50.3MB. Free memory was 32.4MB in the beginning and 32.4MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:45:16,643 INFO L158 Benchmark]: CACSL2BoogieTranslator took 514.94ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 25.9MB in the beginning and 34.8MB in the end (delta: -8.9MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2022-07-21 08:45:16,643 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.87ms. Allocated memory is still 60.8MB. Free memory was 34.8MB in the beginning and 32.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:45:16,644 INFO L158 Benchmark]: Boogie Preprocessor took 50.45ms. Allocated memory is still 60.8MB. Free memory was 32.9MB in the beginning and 31.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:45:16,644 INFO L158 Benchmark]: RCFGBuilder took 433.33ms. Allocated memory is still 60.8MB. Free memory was 31.4MB in the beginning and 33.9MB in the end (delta: -2.5MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2022-07-21 08:45:16,644 INFO L158 Benchmark]: TraceAbstraction took 1925.90ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 33.3MB in the beginning and 52.6MB in the end (delta: -19.3MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2022-07-21 08:45:16,645 INFO L158 Benchmark]: Witness Printer took 52.09ms. Allocated memory is still 94.4MB. Free memory was 52.5MB in the beginning and 40.8MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 08:45:16,646 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 50.3MB. Free memory was 32.4MB in the beginning and 32.4MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 514.94ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 25.9MB in the beginning and 34.8MB in the end (delta: -8.9MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.87ms. Allocated memory is still 60.8MB. Free memory was 34.8MB in the beginning and 32.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.45ms. Allocated memory is still 60.8MB. Free memory was 32.9MB in the beginning and 31.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 433.33ms. Allocated memory is still 60.8MB. Free memory was 31.4MB in the beginning and 33.9MB in the end (delta: -2.5MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1925.90ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 33.3MB in the beginning and 52.6MB in the end (delta: -19.3MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * Witness Printer took 52.09ms. Allocated memory is still 94.4MB. Free memory was 52.5MB in the beginning and 40.8MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 volatile int x; VAL [x=0] [L698] 0 volatile int n; VAL [n=0, x=0] [L710] 0 pthread_t t1, t2; VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, n=0, t1={5:0}, t2={3:0}, x=0] [L711] 0 int i; VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, n=0, t1={5:0}, t2={3:0}, x=0] [L712] 0 x = 0 VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, n=0, t1={5:0}, t2={3:0}, x=0] [L713] 0 n = __VERIFIER_nondet_int() VAL [\old(argc)=49, __VERIFIER_nondet_int()=1, argc=49, argv={51:50}, argv={51:50}, n=1, t1={5:0}, t2={3:0}, x=0] [L714] CALL 0 assume_abort_if_not(n > 0) [L686] COND FALSE 0 !(!cond) VAL [\old(cond)=1, cond=1, n=1, x=0] [L714] RET 0 assume_abort_if_not(n > 0) [L715] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, n=1, pthread_create(&t1, 0, thr1, 0)=-1, t1={5:0}, t2={3:0}, x=0] [L700] CALL 1 __VERIFIER_assert(x < n) [L716] 0 i = 0 VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, i=0, n=1, t1={5:0}, t2={3:0}, x=0] [L716] COND TRUE 0 i < n VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, i=0, n=1, t1={5:0}, t2={3:0}, x=0] [L717] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=0, n=1, pthread_create(&t2, 0, thr2, 0)=0, t1={5:0}, t2={3:0}, x=0] [L704] 2 int t; VAL [arg={0:0}, arg={0:0}, n=1, x=0] [L705] 2 t = x VAL [arg={0:0}, arg={0:0}, n=1, t=0, x=0] [L706] 2 x = t + 1 VAL [arg={0:0}, arg={0:0}, n=1, t=0, x=1] [L689] COND TRUE 1 !(cond) VAL [\old(cond)=0, arg={0:0}, arg={0:0}, cond=0, n=1, t=0, x=1] [L690] 1 reach_error() VAL [\old(cond)=0, arg={0:0}, arg={0:0}, cond=0, n=1, t=0, x=1] - UnprovableResult [Line: 717]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 99 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 11 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209occurred in iteration=1, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 164 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 119 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 95 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94 IncrementalHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 14 mSDtfsCounter, 94 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262occurred in iteration=1, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 164 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-21 08:45:16,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE