./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy8.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/weaver/test-easy8.wvr.c -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 47144ed0d9aa05bca24cc8eb2abad54106f6919871c7945daa183bed78f0ad25 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 14:54:29,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 14:54:29,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 14:54:29,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 14:54:29,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 14:54:29,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 14:54:29,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 14:54:29,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 14:54:29,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 14:54:29,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 14:54:29,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 14:54:29,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 14:54:29,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 14:54:29,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 14:54:29,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 14:54:29,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 14:54:29,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 14:54:29,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 14:54:29,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 14:54:29,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 14:54:29,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 14:54:29,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 14:54:29,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 14:54:29,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 14:54:29,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 14:54:29,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 14:54:29,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 14:54:29,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 14:54:29,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 14:54:29,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 14:54:29,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 14:54:29,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 14:54:29,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 14:54:29,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 14:54:29,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 14:54:29,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 14:54:29,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 14:54:29,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 14:54:29,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 14:54:29,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 14:54:29,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 14:54:29,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 14:54:29,388 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 14:54:29,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 14:54:29,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 14:54:29,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 14:54:29,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 14:54:29,391 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 14:54:29,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 14:54:29,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 14:54:29,392 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 14:54:29,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 14:54:29,393 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 14:54:29,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 14:54:29,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 14:54:29,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 14:54:29,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 14:54:29,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 14:54:29,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 14:54:29,394 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 14:54:29,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 14:54:29,394 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 14:54:29,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 14:54:29,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 14:54:29,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 14:54:29,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 14:54:29,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 14:54:29,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 14:54:29,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 14:54:29,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 14:54:29,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 14:54:29,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 14:54:29,396 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 14:54:29,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 14:54:29,397 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 14:54:29,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 14:54:29,397 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 14:54:29,397 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47144ed0d9aa05bca24cc8eb2abad54106f6919871c7945daa183bed78f0ad25 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 14:54:29,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 14:54:29,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 14:54:29,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 14:54:29,713 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 14:54:29,713 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 14:54:29,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy8.wvr.c [2023-09-01 14:54:30,749 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 14:54:30,946 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 14:54:30,946 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy8.wvr.c [2023-09-01 14:54:30,951 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70ed6c5c1/da5bf8d80fec4e44ae962dfc26ce8d7b/FLAGf8c565015 [2023-09-01 14:54:30,962 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70ed6c5c1/da5bf8d80fec4e44ae962dfc26ce8d7b [2023-09-01 14:54:30,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 14:54:30,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 14:54:30,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 14:54:30,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 14:54:30,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 14:54:30,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:54:30" (1/1) ... [2023-09-01 14:54:30,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37668123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:54:30, skipping insertion in model container [2023-09-01 14:54:30,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:54:30" (1/1) ... [2023-09-01 14:54:30,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 14:54:30,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 14:54:31,108 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy8.wvr.c[1981,1994] [2023-09-01 14:54:31,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 14:54:31,119 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 14:54:31,134 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy8.wvr.c[1981,1994] [2023-09-01 14:54:31,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 14:54:31,141 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 14:54:31,141 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 14:54:31,146 INFO L208 MainTranslator]: Completed translation [2023-09-01 14:54:31,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:54:31 WrapperNode [2023-09-01 14:54:31,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 14:54:31,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 14:54:31,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 14:54:31,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 14:54:31,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:54:31" (1/1) ... [2023-09-01 14:54:31,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:54:31" (1/1) ... [2023-09-01 14:54:31,173 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2023-09-01 14:54:31,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 14:54:31,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 14:54:31,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 14:54:31,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 14:54:31,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:54:31" (1/1) ... [2023-09-01 14:54:31,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:54:31" (1/1) ... [2023-09-01 14:54:31,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:54:31" (1/1) ... [2023-09-01 14:54:31,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:54:31" (1/1) ... [2023-09-01 14:54:31,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:54:31" (1/1) ... [2023-09-01 14:54:31,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:54:31" (1/1) ... [2023-09-01 14:54:31,189 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:54:31" (1/1) ... [2023-09-01 14:54:31,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:54:31" (1/1) ... [2023-09-01 14:54:31,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 14:54:31,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 14:54:31,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 14:54:31,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 14:54:31,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:54:31" (1/1) ... [2023-09-01 14:54:31,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 14:54:31,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:54:31,222 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) [2023-09-01 14:54:31,242 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 [2023-09-01 14:54:31,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 14:54:31,266 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 14:54:31,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 14:54:31,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 14:54:31,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 14:54:31,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 14:54:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 14:54:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 14:54:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 14:54:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 14:54:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 14:54:31,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 14:54:31,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 14:54:31,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 14:54:31,271 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 14:54:31,368 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 14:54:31,370 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 14:54:31,552 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 14:54:31,572 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 14:54:31,573 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 14:54:31,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:54:31 BoogieIcfgContainer [2023-09-01 14:54:31,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 14:54:31,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 14:54:31,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 14:54:31,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 14:54:31,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:54:30" (1/3) ... [2023-09-01 14:54:31,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61954d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:54:31, skipping insertion in model container [2023-09-01 14:54:31,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:54:31" (2/3) ... [2023-09-01 14:54:31,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61954d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:54:31, skipping insertion in model container [2023-09-01 14:54:31,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:54:31" (3/3) ... [2023-09-01 14:54:31,581 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy8.wvr.c [2023-09-01 14:54:31,588 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 14:54:31,600 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 14:54:31,601 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 14:54:31,601 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 14:54:31,692 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 14:54:31,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 150 flow [2023-09-01 14:54:31,797 INFO L130 PetriNetUnfolder]: 2/65 cut-off events. [2023-09-01 14:54:31,797 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 14:54:31,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 65 events. 2/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-09-01 14:54:31,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 150 flow [2023-09-01 14:54:31,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 57 transitions, 126 flow [2023-09-01 14:54:31,812 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 14:54:31,829 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 57 transitions, 126 flow [2023-09-01 14:54:31,832 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 57 transitions, 126 flow [2023-09-01 14:54:31,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 57 transitions, 126 flow [2023-09-01 14:54:31,863 INFO L130 PetriNetUnfolder]: 2/57 cut-off events. [2023-09-01 14:54:31,863 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 14:54:31,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 57 events. 2/57 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-09-01 14:54:31,865 INFO L119 LiptonReduction]: Number of co-enabled transitions 252 [2023-09-01 14:54:33,624 INFO L134 LiptonReduction]: Checked pairs total: 339 [2023-09-01 14:54:33,624 INFO L136 LiptonReduction]: Total number of compositions: 52 [2023-09-01 14:54:33,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 14:54:33,645 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@695dfc8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 14:54:33,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 14:54:33,670 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2023-09-01 14:54:33,670 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 14:54:33,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:54:33,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:54:33,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 14:54:33,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:54:33,677 INFO L85 PathProgramCache]: Analyzing trace with hash -2081232867, now seen corresponding path program 1 times [2023-09-01 14:54:33,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:54:33,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101460322] [2023-09-01 14:54:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:54:33,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:54:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:54:34,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:54:34,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:54:34,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101460322] [2023-09-01 14:54:34,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101460322] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:54:34,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:54:34,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 14:54:34,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114226132] [2023-09-01 14:54:34,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:54:34,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 14:54:34,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:54:34,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 14:54:34,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 14:54:34,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 119 [2023-09-01 14:54:34,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2023-09-01 14:54:34,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:54:34,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 119 [2023-09-01 14:54:34,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:54:34,218 INFO L130 PetriNetUnfolder]: 8/32 cut-off events. [2023-09-01 14:54:34,219 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 14:54:34,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 32 events. 8/32 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 4 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 42. Up to 22 conditions per place. [2023-09-01 14:54:34,221 INFO L137 encePairwiseOnDemand]: 116/119 looper letters, 10 selfloop transitions, 2 changer transitions 4/16 dead transitions. [2023-09-01 14:54:34,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 16 transitions, 82 flow [2023-09-01 14:54:34,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 14:54:34,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 14:54:34,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2023-09-01 14:54:34,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182072829131653 [2023-09-01 14:54:34,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 185 transitions. [2023-09-01 14:54:34,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 185 transitions. [2023-09-01 14:54:34,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:54:34,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 185 transitions. [2023-09-01 14:54:34,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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) [2023-09-01 14:54:34,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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) [2023-09-01 14:54:34,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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) [2023-09-01 14:54:34,253 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 34 flow. Second operand 3 states and 185 transitions. [2023-09-01 14:54:34,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 16 transitions, 82 flow [2023-09-01 14:54:34,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 16 transitions, 70 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 14:54:34,256 INFO L231 Difference]: Finished difference. Result has 17 places, 11 transitions, 34 flow [2023-09-01 14:54:34,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2023-09-01 14:54:34,261 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-09-01 14:54:34,261 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 34 flow [2023-09-01 14:54:34,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2023-09-01 14:54:34,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:54:34,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:54:34,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 14:54:34,264 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 14:54:34,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:54:34,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1385331357, now seen corresponding path program 2 times [2023-09-01 14:54:34,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:54:34,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722033421] [2023-09-01 14:54:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:54:34,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:54:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:54:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:54:34,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:54:34,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722033421] [2023-09-01 14:54:34,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722033421] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:54:34,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:54:34,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 14:54:34,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542570199] [2023-09-01 14:54:34,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:54:34,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 14:54:34,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:54:34,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 14:54:34,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 14:54:34,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 119 [2023-09-01 14:54:34,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2023-09-01 14:54:34,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:54:34,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 119 [2023-09-01 14:54:34,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:54:34,503 INFO L130 PetriNetUnfolder]: 1/8 cut-off events. [2023-09-01 14:54:34,503 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 14:54:34,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 8 events. 1/8 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/10 useless extension candidates. Maximal degree in co-relation 15. Up to 6 conditions per place. [2023-09-01 14:54:34,504 INFO L137 encePairwiseOnDemand]: 117/119 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-09-01 14:54:34,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 7 transitions, 33 flow [2023-09-01 14:54:34,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 14:54:34,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 14:54:34,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2023-09-01 14:54:34,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49299719887955185 [2023-09-01 14:54:34,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 176 transitions. [2023-09-01 14:54:34,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 176 transitions. [2023-09-01 14:54:34,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:54:34,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 176 transitions. [2023-09-01 14:54:34,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2023-09-01 14:54:34,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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) [2023-09-01 14:54:34,513 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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) [2023-09-01 14:54:34,513 INFO L175 Difference]: Start difference. First operand has 17 places, 11 transitions, 34 flow. Second operand 3 states and 176 transitions. [2023-09-01 14:54:34,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 7 transitions, 33 flow [2023-09-01 14:54:34,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 7 transitions, 31 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 14:54:34,514 INFO L231 Difference]: Finished difference. Result has 12 places, 0 transitions, 0 flow [2023-09-01 14:54:34,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=15, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=12, PETRI_TRANSITIONS=0} [2023-09-01 14:54:34,515 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -6 predicate places. [2023-09-01 14:54:34,515 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 0 transitions, 0 flow [2023-09-01 14:54:34,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2023-09-01 14:54:34,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-09-01 14:54:34,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 14:54:34,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 14:54:34,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 14:54:34,523 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2023-09-01 14:54:34,526 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 14:54:34,526 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 14:54:34,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 02:54:34 BasicIcfg [2023-09-01 14:54:34,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 14:54:34,530 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 14:54:34,530 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 14:54:34,530 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 14:54:34,530 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:54:31" (3/4) ... [2023-09-01 14:54:34,533 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 14:54:34,536 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 14:54:34,536 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 14:54:34,541 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-09-01 14:54:34,542 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 14:54:34,542 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 14:54:34,542 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 14:54:34,570 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 14:54:34,570 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 14:54:34,571 INFO L158 Benchmark]: Toolchain (without parser) took 3606.10ms. Allocated memory was 69.2MB in the beginning and 111.1MB in the end (delta: 41.9MB). Free memory was 47.2MB in the beginning and 61.0MB in the end (delta: -13.7MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2023-09-01 14:54:34,571 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 69.2MB. Free memory was 46.7MB in the beginning and 46.7MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 14:54:34,572 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.15ms. Allocated memory is still 69.2MB. Free memory was 47.1MB in the beginning and 36.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 14:54:34,572 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.12ms. Allocated memory is still 69.2MB. Free memory was 36.4MB in the beginning and 34.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 14:54:34,572 INFO L158 Benchmark]: Boogie Preprocessor took 16.79ms. Allocated memory is still 69.2MB. Free memory was 34.8MB in the beginning and 33.8MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 14:54:34,573 INFO L158 Benchmark]: RCFGBuilder took 383.05ms. Allocated memory was 69.2MB in the beginning and 92.3MB in the end (delta: 23.1MB). Free memory was 33.6MB in the beginning and 62.4MB in the end (delta: -28.8MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2023-09-01 14:54:34,573 INFO L158 Benchmark]: TraceAbstraction took 2952.90ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 61.5MB in the beginning and 64.0MB in the end (delta: -2.4MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2023-09-01 14:54:34,574 INFO L158 Benchmark]: Witness Printer took 40.52ms. Allocated memory is still 111.1MB. Free memory was 63.1MB in the beginning and 61.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 14:54:34,576 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 69.2MB. Free memory was 46.7MB in the beginning and 46.7MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.15ms. Allocated memory is still 69.2MB. Free memory was 47.1MB in the beginning and 36.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.12ms. Allocated memory is still 69.2MB. Free memory was 36.4MB in the beginning and 34.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.79ms. Allocated memory is still 69.2MB. Free memory was 34.8MB in the beginning and 33.8MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 383.05ms. Allocated memory was 69.2MB in the beginning and 92.3MB in the end (delta: 23.1MB). Free memory was 33.6MB in the beginning and 62.4MB in the end (delta: -28.8MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2952.90ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 61.5MB in the beginning and 64.0MB in the end (delta: -2.4MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * Witness Printer took 40.52ms. Allocated memory is still 111.1MB. Free memory was 63.1MB in the beginning and 61.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 62 PlacesBefore, 18 PlacesAfterwards, 57 TransitionsBefore, 11 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 52 TotalNumberOfCompositions, 339 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 306, independent: 294, independent conditional: 0, independent unconditional: 294, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 157, independent: 153, independent conditional: 0, independent unconditional: 153, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 306, independent: 141, independent conditional: 0, independent unconditional: 141, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 157, unknown conditional: 0, unknown unconditional: 157] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 75]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 81 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 0.4s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 14:54:34,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE