./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.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_label42+token_ring.03.cil-2.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 416d3b74bdc0e830f927a3018e8747e6a310d2a238902dccf396a8065404f3af --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:45:58,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:45:58,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:45:58,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:45:58,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:45:58,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:45:58,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:45:58,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:45:58,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:45:58,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:45:58,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:45:58,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:45:58,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:45:58,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:45:58,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:45:58,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:45:58,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:45:58,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:45:58,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:45:58,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:45:58,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:45:58,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:45:58,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:45:58,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:45:58,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:45:58,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:45:58,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:45:58,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:45:58,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:45:58,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:45:58,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:45:58,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:45:58,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:45:58,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:45:58,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:45:58,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:45:58,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:45:58,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:45:58,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:45:58,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:45:58,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:45:58,985 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:45:59,009 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:45:59,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:45:59,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:45:59,009 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:45:59,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:45:59,010 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:45:59,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:45:59,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:45:59,011 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:45:59,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:45:59,011 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:45:59,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:45:59,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:45:59,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:45:59,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:45:59,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:45:59,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:45:59,018 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:45:59,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:45:59,018 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:45:59,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:45:59,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:45:59,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:45:59,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:45:59,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:45:59,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:45:59,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:45:59,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:45:59,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:45:59,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:45:59,021 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:45:59,021 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:45:59,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:45:59,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:45:59,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 416d3b74bdc0e830f927a3018e8747e6a310d2a238902dccf396a8065404f3af [2021-12-15 11:45:59,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:45:59,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:45:59,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:45:59,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:45:59,230 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:45:59,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c [2021-12-15 11:45:59,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee4656156/df8333276e78446ebc4e68242ddf1a03/FLAG7ea5397e7 [2021-12-15 11:45:59,904 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:45:59,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c [2021-12-15 11:45:59,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee4656156/df8333276e78446ebc4e68242ddf1a03/FLAG7ea5397e7 [2021-12-15 11:46:00,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee4656156/df8333276e78446ebc4e68242ddf1a03 [2021-12-15 11:46:00,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:46:00,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:46:00,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:46:00,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:46:00,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:46:00,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:00" (1/1) ... [2021-12-15 11:46:00,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:00, skipping insertion in model container [2021-12-15 11:46:00,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:00" (1/1) ... [2021-12-15 11:46:00,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:46:00,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:46:01,429 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_label42+token_ring.03.cil-2.c[378560,378573] [2021-12-15 11:46:01,449 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_label42+token_ring.03.cil-2.c[383339,383352] [2021-12-15 11:46:01,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:46:01,583 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:46:02,161 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_label42+token_ring.03.cil-2.c[378560,378573] [2021-12-15 11:46:02,166 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_label42+token_ring.03.cil-2.c[383339,383352] [2021-12-15 11:46:02,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:46:02,212 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:46:02,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:02 WrapperNode [2021-12-15 11:46:02,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:46:02,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:46:02,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:46:02,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:46:02,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:02" (1/1) ... [2021-12-15 11:46:02,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:02" (1/1) ... [2021-12-15 11:46:02,559 INFO L137 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12677 [2021-12-15 11:46:02,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:46:02,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:46:02,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:46:02,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:46:02,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:02" (1/1) ... [2021-12-15 11:46:02,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:02" (1/1) ... [2021-12-15 11:46:02,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:02" (1/1) ... [2021-12-15 11:46:02,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:02" (1/1) ... [2021-12-15 11:46:02,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:02" (1/1) ... [2021-12-15 11:46:02,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:02" (1/1) ... [2021-12-15 11:46:02,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:02" (1/1) ... [2021-12-15 11:46:03,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:46:03,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:46:03,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:46:03,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:46:03,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:02" (1/1) ... [2021-12-15 11:46:03,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:46:03,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:46:03,105 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 11:46:03,147 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 11:46:03,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:46:03,161 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:46:03,161 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:46:03,161 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:46:03,161 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:46:03,161 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:46:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:46:03,162 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:46:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:46:03,162 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:46:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:46:03,162 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:46:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:46:03,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:46:03,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:46:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:46:03,252 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:46:03,260 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:46:07,760 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:46:07,782 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:46:07,783 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-12-15 11:46:07,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:46:07 BoogieIcfgContainer [2021-12-15 11:46:07,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:46:07,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:46:07,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:46:07,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:46:07,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:46:00" (1/3) ... [2021-12-15 11:46:07,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6ae61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:46:07, skipping insertion in model container [2021-12-15 11:46:07,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:02" (2/3) ... [2021-12-15 11:46:07,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6ae61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:46:07, skipping insertion in model container [2021-12-15 11:46:07,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:46:07" (3/3) ... [2021-12-15 11:46:07,795 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.03.cil-2.c [2021-12-15 11:46:07,798 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:46:07,799 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:46:07,852 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:46:07,858 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 11:46:07,859 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:46:07,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-15 11:46:07,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-15 11:46:07,926 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:46:07,927 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] [2021-12-15 11:46:07,928 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:46:07,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:46:07,932 INFO L85 PathProgramCache]: Analyzing trace with hash 200056068, now seen corresponding path program 1 times [2021-12-15 11:46:07,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:46:07,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404453321] [2021-12-15 11:46:07,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:46:07,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:46:07,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:46:07,990 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 11:46:07,998 INFO L158 Benchmark]: Toolchain (without parser) took 7976.12ms. Allocated memory was 90.2MB in the beginning and 761.3MB in the end (delta: 671.1MB). Free memory was 37.3MB in the beginning and 400.9MB in the end (delta: -363.6MB). Peak memory consumption was 307.2MB. Max. memory is 16.1GB. [2021-12-15 11:46:07,999 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 90.2MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:46:07,999 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2191.11ms. Allocated memory was 90.2MB in the beginning and 230.7MB in the end (delta: 140.5MB). Free memory was 37.0MB in the beginning and 131.6MB in the end (delta: -94.6MB). Peak memory consumption was 83.6MB. Max. memory is 16.1GB. [2021-12-15 11:46:08,000 INFO L158 Benchmark]: Boogie Procedure Inliner took 345.38ms. Allocated memory is still 230.7MB. Free memory was 130.6MB in the beginning and 88.9MB in the end (delta: 41.7MB). Peak memory consumption was 73.2MB. Max. memory is 16.1GB. [2021-12-15 11:46:08,000 INFO L158 Benchmark]: Boogie Preprocessor took 495.61ms. Allocated memory is still 230.7MB. Free memory was 88.9MB in the beginning and 74.2MB in the end (delta: 14.7MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. [2021-12-15 11:46:08,001 INFO L158 Benchmark]: RCFGBuilder took 4731.20ms. Allocated memory was 230.7MB in the beginning and 761.3MB in the end (delta: 530.6MB). Free memory was 74.2MB in the beginning and 421.8MB in the end (delta: -347.6MB). Peak memory consumption was 293.6MB. Max. memory is 16.1GB. [2021-12-15 11:46:08,001 INFO L158 Benchmark]: TraceAbstraction took 207.11ms. Allocated memory is still 761.3MB. Free memory was 421.8MB in the beginning and 400.9MB in the end (delta: 21.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-15 11:46:08,003 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 90.2MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2191.11ms. Allocated memory was 90.2MB in the beginning and 230.7MB in the end (delta: 140.5MB). Free memory was 37.0MB in the beginning and 131.6MB in the end (delta: -94.6MB). Peak memory consumption was 83.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 345.38ms. Allocated memory is still 230.7MB. Free memory was 130.6MB in the beginning and 88.9MB in the end (delta: 41.7MB). Peak memory consumption was 73.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 495.61ms. Allocated memory is still 230.7MB. Free memory was 88.9MB in the beginning and 74.2MB in the end (delta: 14.7MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. * RCFGBuilder took 4731.20ms. Allocated memory was 230.7MB in the beginning and 761.3MB in the end (delta: 530.6MB). Free memory was 74.2MB in the beginning and 421.8MB in the end (delta: -347.6MB). Peak memory consumption was 293.6MB. Max. memory is 16.1GB. * TraceAbstraction took 207.11ms. Allocated memory is still 761.3MB. Free memory was 421.8MB in the beginning and 400.9MB in the end (delta: 21.0MB). Peak memory consumption was 18.9MB. 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 11:46:08,031 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 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_label42+token_ring.03.cil-2.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 416d3b74bdc0e830f927a3018e8747e6a310d2a238902dccf396a8065404f3af --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:46:09,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:46:09,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:46:09,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:46:09,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:46:09,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:46:09,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:46:09,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:46:09,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:46:09,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:46:09,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:46:09,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:46:09,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:46:09,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:46:09,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:46:09,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:46:09,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:46:09,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:46:09,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:46:09,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:46:09,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:46:09,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:46:09,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:46:09,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:46:09,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:46:09,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:46:09,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:46:09,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:46:09,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:46:09,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:46:09,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:46:09,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:46:09,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:46:09,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:46:09,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:46:09,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:46:09,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:46:09,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:46:09,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:46:09,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:46:09,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:46:09,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:46:09,833 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:46:09,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:46:09,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:46:09,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:46:09,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:46:09,834 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:46:09,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:46:09,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:46:09,835 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:46:09,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:46:09,836 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:46:09,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:46:09,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:46:09,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:46:09,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:46:09,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:46:09,840 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:46:09,840 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:46:09,840 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:46:09,840 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:46:09,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:46:09,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:46:09,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:46:09,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:46:09,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:46:09,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:46:09,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:46:09,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:46:09,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:46:09,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:46:09,842 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:46:09,842 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:46:09,842 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:46:09,842 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:46:09,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:46:09,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:46:09,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:46:09,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 416d3b74bdc0e830f927a3018e8747e6a310d2a238902dccf396a8065404f3af [2021-12-15 11:46:10,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:46:10,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:46:10,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:46:10,173 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:46:10,173 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:46:10,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c [2021-12-15 11:46:10,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a841a0f1/6976e9bc6d054c98bf8438288006127d/FLAGf70347715 [2021-12-15 11:46:10,930 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:46:10,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c [2021-12-15 11:46:10,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a841a0f1/6976e9bc6d054c98bf8438288006127d/FLAGf70347715 [2021-12-15 11:46:11,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a841a0f1/6976e9bc6d054c98bf8438288006127d [2021-12-15 11:46:11,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:46:11,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:46:11,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:46:11,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:46:11,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:46:11,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:11" (1/1) ... [2021-12-15 11:46:11,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2338b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:11, skipping insertion in model container [2021-12-15 11:46:11,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:11" (1/1) ... [2021-12-15 11:46:11,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:46:11,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:46:12,594 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_label42+token_ring.03.cil-2.c[378560,378573] [2021-12-15 11:46:12,615 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_label42+token_ring.03.cil-2.c[383339,383352] [2021-12-15 11:46:12,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:46:12,733 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:46:13,431 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_label42+token_ring.03.cil-2.c[378560,378573] [2021-12-15 11:46:13,436 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_label42+token_ring.03.cil-2.c[383339,383352] [2021-12-15 11:46:13,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:46:13,493 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:46:13,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:13 WrapperNode [2021-12-15 11:46:13,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:46:13,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:46:13,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:46:13,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:46:13,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:13" (1/1) ... [2021-12-15 11:46:13,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:13" (1/1) ... [2021-12-15 11:46:13,855 INFO L137 Inliner]: procedures = 51, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12653 [2021-12-15 11:46:13,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:46:13,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:46:13,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:46:13,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:46:13,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:13" (1/1) ... [2021-12-15 11:46:13,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:13" (1/1) ... [2021-12-15 11:46:13,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:13" (1/1) ... [2021-12-15 11:46:13,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:13" (1/1) ... [2021-12-15 11:46:14,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:13" (1/1) ... [2021-12-15 11:46:14,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:13" (1/1) ... [2021-12-15 11:46:14,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:13" (1/1) ... [2021-12-15 11:46:14,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:46:14,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:46:14,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:46:14,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:46:14,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:13" (1/1) ... [2021-12-15 11:46:14,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:46:14,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:46:14,340 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 11:46:14,423 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 11:46:14,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:46:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:46:14,466 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:46:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:46:14,467 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:46:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:46:14,467 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:46:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:46:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:46:14,467 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:46:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:46:14,468 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:46:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:46:14,468 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:46:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:46:14,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:46:14,557 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:46:14,558 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:46:20,750 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:46:20,768 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:46:20,768 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-12-15 11:46:20,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:46:20 BoogieIcfgContainer [2021-12-15 11:46:20,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:46:20,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:46:20,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:46:20,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:46:20,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:46:11" (1/3) ... [2021-12-15 11:46:20,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c5de16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:46:20, skipping insertion in model container [2021-12-15 11:46:20,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:13" (2/3) ... [2021-12-15 11:46:20,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c5de16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:46:20, skipping insertion in model container [2021-12-15 11:46:20,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:46:20" (3/3) ... [2021-12-15 11:46:20,780 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.03.cil-2.c [2021-12-15 11:46:20,784 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:46:20,784 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:46:20,825 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:46:20,830 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 11:46:20,830 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:46:20,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-15 11:46:20,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-15 11:46:20,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:46:20,882 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] [2021-12-15 11:46:20,883 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:46:20,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:46:20,890 INFO L85 PathProgramCache]: Analyzing trace with hash 200056068, now seen corresponding path program 1 times [2021-12-15 11:46:20,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:46:20,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961515305] [2021-12-15 11:46:20,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:46:20,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:46:20,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:46:20,901 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 11:46:20,902 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 11:46:20,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 11:46:21,138 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 11:46:21,139 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 11:46:21,143 INFO L158 Benchmark]: Toolchain (without parser) took 9883.84ms. Allocated memory was 71.3MB in the beginning and 880.8MB in the end (delta: 809.5MB). Free memory was 35.3MB in the beginning and 345.3MB in the end (delta: -310.0MB). Peak memory consumption was 495.1MB. Max. memory is 16.1GB. [2021-12-15 11:46:21,143 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 54.5MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:46:21,144 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2232.51ms. Allocated memory was 71.3MB in the beginning and 220.2MB in the end (delta: 148.9MB). Free memory was 35.1MB in the beginning and 97.3MB in the end (delta: -62.2MB). Peak memory consumption was 95.0MB. Max. memory is 16.1GB. [2021-12-15 11:46:21,144 INFO L158 Benchmark]: Boogie Procedure Inliner took 361.05ms. Allocated memory is still 220.2MB. Free memory was 97.3MB in the beginning and 92.6MB in the end (delta: 4.7MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. [2021-12-15 11:46:21,145 INFO L158 Benchmark]: Boogie Preprocessor took 399.23ms. Allocated memory was 220.2MB in the beginning and 440.4MB in the end (delta: 220.2MB). Free memory was 92.6MB in the beginning and 275.0MB in the end (delta: -182.5MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. [2021-12-15 11:46:21,145 INFO L158 Benchmark]: RCFGBuilder took 6515.98ms. Allocated memory was 440.4MB in the beginning and 880.8MB in the end (delta: 440.4MB). Free memory was 275.0MB in the beginning and 369.4MB in the end (delta: -94.4MB). Peak memory consumption was 348.1MB. Max. memory is 16.1GB. [2021-12-15 11:46:21,146 INFO L158 Benchmark]: TraceAbstraction took 367.92ms. Allocated memory is still 880.8MB. Free memory was 369.4MB in the beginning and 345.3MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-15 11:46:21,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 54.5MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2232.51ms. Allocated memory was 71.3MB in the beginning and 220.2MB in the end (delta: 148.9MB). Free memory was 35.1MB in the beginning and 97.3MB in the end (delta: -62.2MB). Peak memory consumption was 95.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 361.05ms. Allocated memory is still 220.2MB. Free memory was 97.3MB in the beginning and 92.6MB in the end (delta: 4.7MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 399.23ms. Allocated memory was 220.2MB in the beginning and 440.4MB in the end (delta: 220.2MB). Free memory was 92.6MB in the beginning and 275.0MB in the end (delta: -182.5MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. * RCFGBuilder took 6515.98ms. Allocated memory was 440.4MB in the beginning and 880.8MB in the end (delta: 440.4MB). Free memory was 275.0MB in the beginning and 369.4MB in the end (delta: -94.4MB). Peak memory consumption was 348.1MB. Max. memory is 16.1GB. * TraceAbstraction took 367.92ms. Allocated memory is still 880.8MB. Free memory was 369.4MB in the beginning and 345.3MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. 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 11:46:21,186 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