./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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/combinations/Problem05_label44+token_ring.05.cil-1.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 806c9058928482f755246f30ce94bbbe3c870162d7ccdd45454f74a5441d158a --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:47:47,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:47:47,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:47:47,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:47:47,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:47:47,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:47:47,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:47:47,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:47:47,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:47:47,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:47:47,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:47:47,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:47:47,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:47:47,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:47:47,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:47:47,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:47:47,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:47:47,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:47:47,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:47:47,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:47:47,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:47:47,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:47:47,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:47:47,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:47:47,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:47:47,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:47:47,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:47:47,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:47:47,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:47:47,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:47:47,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:47:47,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:47:47,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:47:47,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:47:47,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:47:47,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:47:47,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:47:47,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:47:47,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:47:47,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:47:47,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:47:47,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:47:47,220 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:47:47,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:47:47,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:47:47,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:47:47,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:47:47,222 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:47:47,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:47:47,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:47:47,223 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:47:47,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:47:47,224 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:47:47,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:47:47,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:47:47,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:47:47,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:47:47,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:47:47,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:47:47,225 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:47:47,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:47:47,225 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:47:47,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:47:47,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:47:47,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:47:47,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:47:47,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:47:47,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:47:47,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:47:47,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:47:47,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:47:47,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:47:47,227 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:47:47,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:47:47,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:47:47,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:47:47,228 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 806c9058928482f755246f30ce94bbbe3c870162d7ccdd45454f74a5441d158a [2021-12-15 11:47:47,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:47:47,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:47:47,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:47:47,446 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:47:47,447 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:47:47,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c [2021-12-15 11:47:47,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61205bfdf/f9511357bbde4c9aa083720339db60c4/FLAGf0fc8d9d5 [2021-12-15 11:47:48,124 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:47:48,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c [2021-12-15 11:47:48,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61205bfdf/f9511357bbde4c9aa083720339db60c4/FLAGf0fc8d9d5 [2021-12-15 11:47:48,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61205bfdf/f9511357bbde4c9aa083720339db60c4 [2021-12-15 11:47:48,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:47:48,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:47:48,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:47:48,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:47:48,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:47:48,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:47:48" (1/1) ... [2021-12-15 11:47:48,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9cb5916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:48, skipping insertion in model container [2021-12-15 11:47:48,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:47:48" (1/1) ... [2021-12-15 11:47:48,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:47:48,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:47:49,657 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/combinations/Problem05_label44+token_ring.05.cil-1.c[377340,377353] [2021-12-15 11:47:49,676 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/combinations/Problem05_label44+token_ring.05.cil-1.c[383339,383352] [2021-12-15 11:47:49,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:47:49,813 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:47:50,384 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/combinations/Problem05_label44+token_ring.05.cil-1.c[377340,377353] [2021-12-15 11:47:50,389 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/combinations/Problem05_label44+token_ring.05.cil-1.c[383339,383352] [2021-12-15 11:47:50,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:47:50,450 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:47:50,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:50 WrapperNode [2021-12-15 11:47:50,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:47:50,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:47:50,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:47:50,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:47:50,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:50" (1/1) ... [2021-12-15 11:47:50,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:50" (1/1) ... [2021-12-15 11:47:50,838 INFO L137 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12793 [2021-12-15 11:47:50,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:47:50,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:47:50,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:47:50,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:47:50,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:50" (1/1) ... [2021-12-15 11:47:50,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:50" (1/1) ... [2021-12-15 11:47:50,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:50" (1/1) ... [2021-12-15 11:47:50,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:50" (1/1) ... [2021-12-15 11:47:51,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:50" (1/1) ... [2021-12-15 11:47:51,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:50" (1/1) ... [2021-12-15 11:47:51,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:50" (1/1) ... [2021-12-15 11:47:51,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:47:51,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:47:51,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:47:51,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:47:51,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:50" (1/1) ... [2021-12-15 11:47:51,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:47:51,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:47:51,199 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) [2021-12-15 11:47:51,204 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 [2021-12-15 11:47:51,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:47:51,225 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:47:51,225 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:47:51,225 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:47:51,225 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:47:51,225 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:47:51,225 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:47:51,225 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:47:51,226 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:47:51,226 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:47:51,226 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:47:51,226 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:47:51,226 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:47:51,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:47:51,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:47:51,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:47:51,310 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:47:51,312 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:47:55,845 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:47:55,863 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:47:55,863 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-12-15 11:47:55,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:55 BoogieIcfgContainer [2021-12-15 11:47:55,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:47:55,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:47:55,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:47:55,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:47:55,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:47:48" (1/3) ... [2021-12-15 11:47:55,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd0fde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:55, skipping insertion in model container [2021-12-15 11:47:55,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:50" (2/3) ... [2021-12-15 11:47:55,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd0fde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:55, skipping insertion in model container [2021-12-15 11:47:55,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:55" (3/3) ... [2021-12-15 11:47:55,876 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.05.cil-1.c [2021-12-15 11:47:55,883 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:47:55,883 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:47:55,940 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:47:55,946 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:47:55,946 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:47:55,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-15 11:47:56,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-15 11:47:56,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:47:56,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:47:56,012 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:47:56,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:47:56,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1427785225, now seen corresponding path program 1 times [2021-12-15 11:47:56,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:47:56,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080698543] [2021-12-15 11:47:56,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:47:56,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:47:56,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:47:56,065 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:47:56,070 INFO L158 Benchmark]: Toolchain (without parser) took 7836.01ms. Allocated memory was 111.1MB in the beginning and 692.1MB in the end (delta: 580.9MB). Free memory was 71.4MB in the beginning and 256.3MB in the end (delta: -184.9MB). Peak memory consumption was 394.3MB. Max. memory is 16.1GB. [2021-12-15 11:47:56,070 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 111.1MB. Free memory was 66.8MB in the beginning and 66.8MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:47:56,071 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2216.20ms. Allocated memory was 111.1MB in the beginning and 197.1MB in the end (delta: 86.0MB). Free memory was 71.4MB in the beginning and 74.8MB in the end (delta: -3.5MB). Peak memory consumption was 98.6MB. Max. memory is 16.1GB. [2021-12-15 11:47:56,071 INFO L158 Benchmark]: Boogie Procedure Inliner took 387.49ms. Allocated memory was 197.1MB in the beginning and 346.0MB in the end (delta: 148.9MB). Free memory was 74.8MB in the beginning and 207.9MB in the end (delta: -133.1MB). Peak memory consumption was 55.6MB. Max. memory is 16.1GB. [2021-12-15 11:47:56,071 INFO L158 Benchmark]: Boogie Preprocessor took 336.73ms. Allocated memory is still 346.0MB. Free memory was 207.9MB in the beginning and 164.9MB in the end (delta: 43.0MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2021-12-15 11:47:56,072 INFO L158 Benchmark]: RCFGBuilder took 4689.77ms. Allocated memory was 346.0MB in the beginning and 692.1MB in the end (delta: 346.0MB). Free memory was 164.9MB in the beginning and 278.3MB in the end (delta: -113.4MB). Peak memory consumption was 244.3MB. Max. memory is 16.1GB. [2021-12-15 11:47:56,072 INFO L158 Benchmark]: TraceAbstraction took 198.75ms. Allocated memory is still 692.1MB. Free memory was 278.3MB in the beginning and 256.3MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-15 11:47:56,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 111.1MB. Free memory was 66.8MB in the beginning and 66.8MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2216.20ms. Allocated memory was 111.1MB in the beginning and 197.1MB in the end (delta: 86.0MB). Free memory was 71.4MB in the beginning and 74.8MB in the end (delta: -3.5MB). Peak memory consumption was 98.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 387.49ms. Allocated memory was 197.1MB in the beginning and 346.0MB in the end (delta: 148.9MB). Free memory was 74.8MB in the beginning and 207.9MB in the end (delta: -133.1MB). Peak memory consumption was 55.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 336.73ms. Allocated memory is still 346.0MB. Free memory was 207.9MB in the beginning and 164.9MB in the end (delta: 43.0MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * RCFGBuilder took 4689.77ms. Allocated memory was 346.0MB in the beginning and 692.1MB in the end (delta: 346.0MB). Free memory was 164.9MB in the beginning and 278.3MB in the end (delta: -113.4MB). Peak memory consumption was 244.3MB. Max. memory is 16.1GB. * TraceAbstraction took 198.75ms. Allocated memory is still 692.1MB. Free memory was 278.3MB in the beginning and 256.3MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:47:56,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/combinations/Problem05_label44+token_ring.05.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 806c9058928482f755246f30ce94bbbe3c870162d7ccdd45454f74a5441d158a --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:47:57,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:47:57,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:47:57,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:47:57,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:47:57,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:47:57,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:47:57,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:47:57,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:47:57,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:47:57,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:47:57,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:47:57,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:47:57,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:47:57,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:47:57,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:47:57,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:47:57,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:47:57,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:47:57,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:47:57,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:47:57,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:47:57,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:47:57,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:47:57,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:47:57,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:47:57,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:47:57,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:47:57,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:47:57,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:47:57,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:47:57,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:47:57,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:47:57,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:47:57,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:47:57,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:47:57,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:47:57,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:47:57,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:47:57,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:47:57,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:47:57,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:47:57,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:47:57,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:47:57,883 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:47:57,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:47:57,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:47:57,884 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:47:57,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:47:57,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:47:57,885 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:47:57,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:47:57,886 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:47:57,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:47:57,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:47:57,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:47:57,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:47:57,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:47:57,887 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:47:57,887 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:47:57,887 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:47:57,887 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:47:57,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:47:57,887 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:47:57,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:47:57,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:47:57,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:47:57,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:47:57,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:47:57,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:47:57,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:47:57,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:47:57,889 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:47:57,889 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:47:57,889 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:47:57,889 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:47:57,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:47:57,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:47:57,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:47:57,890 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 806c9058928482f755246f30ce94bbbe3c870162d7ccdd45454f74a5441d158a [2021-12-15 11:47:58,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:47:58,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:47:58,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:47:58,188 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:47:58,189 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:47:58,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c [2021-12-15 11:47:58,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd52f2450/ce023ac7a12047f1809d3d1157d92529/FLAGe94688bd8 [2021-12-15 11:47:58,985 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:47:58,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c [2021-12-15 11:47:59,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd52f2450/ce023ac7a12047f1809d3d1157d92529/FLAGe94688bd8 [2021-12-15 11:47:59,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd52f2450/ce023ac7a12047f1809d3d1157d92529 [2021-12-15 11:47:59,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:47:59,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:47:59,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:47:59,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:47:59,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:47:59,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:47:59" (1/1) ... [2021-12-15 11:47:59,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a46e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:59, skipping insertion in model container [2021-12-15 11:47:59,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:47:59" (1/1) ... [2021-12-15 11:47:59,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:47:59,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:48:00,786 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/combinations/Problem05_label44+token_ring.05.cil-1.c[377340,377353] [2021-12-15 11:48:00,809 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/combinations/Problem05_label44+token_ring.05.cil-1.c[383339,383352] [2021-12-15 11:48:00,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:48:00,969 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:48:01,559 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/combinations/Problem05_label44+token_ring.05.cil-1.c[377340,377353] [2021-12-15 11:48:01,565 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/combinations/Problem05_label44+token_ring.05.cil-1.c[383339,383352] [2021-12-15 11:48:01,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:48:01,627 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:48:01,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:01 WrapperNode [2021-12-15 11:48:01,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:48:01,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:48:01,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:48:01,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:48:01,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:01" (1/1) ... [2021-12-15 11:48:01,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:01" (1/1) ... [2021-12-15 11:48:02,025 INFO L137 Inliner]: procedures = 55, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12765 [2021-12-15 11:48:02,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:48:02,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:48:02,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:48:02,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:48:02,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:01" (1/1) ... [2021-12-15 11:48:02,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:01" (1/1) ... [2021-12-15 11:48:02,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:01" (1/1) ... [2021-12-15 11:48:02,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:01" (1/1) ... [2021-12-15 11:48:02,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:01" (1/1) ... [2021-12-15 11:48:02,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:01" (1/1) ... [2021-12-15 11:48:02,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:01" (1/1) ... [2021-12-15 11:48:02,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:48:02,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:48:02,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:48:02,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:48:02,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:01" (1/1) ... [2021-12-15 11:48:02,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:48:02,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:48:02,504 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) [2021-12-15 11:48:02,542 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 [2021-12-15 11:48:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:48:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:48:02,569 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:48:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:48:02,569 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:48:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:48:02,569 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:48:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:48:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:48:02,570 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:48:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:48:02,570 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:48:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:48:02,570 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:48:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:48:02,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:48:02,688 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:48:02,690 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:48:09,128 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:48:09,157 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:48:09,157 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-12-15 11:48:09,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:09 BoogieIcfgContainer [2021-12-15 11:48:09,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:48:09,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:48:09,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:48:09,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:48:09,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:47:59" (1/3) ... [2021-12-15 11:48:09,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358184d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:48:09, skipping insertion in model container [2021-12-15 11:48:09,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:01" (2/3) ... [2021-12-15 11:48:09,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358184d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:48:09, skipping insertion in model container [2021-12-15 11:48:09,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:09" (3/3) ... [2021-12-15 11:48:09,166 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.05.cil-1.c [2021-12-15 11:48:09,170 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:48:09,170 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:48:09,218 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:48:09,223 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:48:09,224 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:48:09,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-15 11:48:09,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-15 11:48:09,267 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:48:09,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:48:09,268 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:48:09,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:48:09,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1427785225, now seen corresponding path program 1 times [2021-12-15 11:48:09,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:48:09,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143959242] [2021-12-15 11:48:09,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:48:09,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:48:09,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:48:09,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 11:48:09,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 11:48:09,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 11:48:09,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 11:48:09,524 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:48:09,526 INFO L158 Benchmark]: Toolchain (without parser) took 10204.20ms. Allocated memory was 81.8MB in the beginning and 992.0MB in the end (delta: 910.2MB). Free memory was 52.4MB in the beginning and 709.2MB in the end (delta: -656.8MB). Peak memory consumption was 251.9MB. Max. memory is 16.1GB. [2021-12-15 11:48:09,527 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 43.3MB in the beginning and 43.3MB in the end (delta: 48.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:48:09,527 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2305.65ms. Allocated memory was 81.8MB in the beginning and 228.6MB in the end (delta: 146.8MB). Free memory was 52.4MB in the beginning and 112.6MB in the end (delta: -60.2MB). Peak memory consumption was 110.3MB. Max. memory is 16.1GB. [2021-12-15 11:48:09,527 INFO L158 Benchmark]: Boogie Procedure Inliner took 396.94ms. Allocated memory is still 228.6MB. Free memory was 112.6MB in the beginning and 101.2MB in the end (delta: 11.4MB). Peak memory consumption was 79.8MB. Max. memory is 16.1GB. [2021-12-15 11:48:09,528 INFO L158 Benchmark]: Boogie Preprocessor took 391.78ms. Allocated memory was 228.6MB in the beginning and 465.6MB in the end (delta: 237.0MB). Free memory was 101.2MB in the beginning and 301.3MB in the end (delta: -200.0MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2021-12-15 11:48:09,528 INFO L158 Benchmark]: RCFGBuilder took 6741.87ms. Allocated memory was 465.6MB in the beginning and 992.0MB in the end (delta: 526.4MB). Free memory was 301.3MB in the beginning and 735.4MB in the end (delta: -434.2MB). Peak memory consumption was 292.5MB. Max. memory is 16.1GB. [2021-12-15 11:48:09,529 INFO L158 Benchmark]: TraceAbstraction took 363.17ms. Allocated memory is still 992.0MB. Free memory was 734.4MB in the beginning and 709.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 11:48:09,537 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 43.3MB in the beginning and 43.3MB in the end (delta: 48.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2305.65ms. Allocated memory was 81.8MB in the beginning and 228.6MB in the end (delta: 146.8MB). Free memory was 52.4MB in the beginning and 112.6MB in the end (delta: -60.2MB). Peak memory consumption was 110.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 396.94ms. Allocated memory is still 228.6MB. Free memory was 112.6MB in the beginning and 101.2MB in the end (delta: 11.4MB). Peak memory consumption was 79.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 391.78ms. Allocated memory was 228.6MB in the beginning and 465.6MB in the end (delta: 237.0MB). Free memory was 101.2MB in the beginning and 301.3MB in the end (delta: -200.0MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. * RCFGBuilder took 6741.87ms. Allocated memory was 465.6MB in the beginning and 992.0MB in the end (delta: 526.4MB). Free memory was 301.3MB in the beginning and 735.4MB in the end (delta: -434.2MB). Peak memory consumption was 292.5MB. Max. memory is 16.1GB. * TraceAbstraction took 363.17ms. Allocated memory is still 992.0MB. Free memory was 734.4MB in the beginning and 709.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:48:09,583 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: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable