./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label47+token_ring.06.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_label47+token_ring.06.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 8321a367d25b54b23b2762d5ecbfeee51530317d33e488964270d878a9001f5b --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:50:04,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:50:04,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:50:04,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:50:04,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:50:04,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:50:04,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:50:04,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:50:04,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:50:05,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:50:05,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:50:05,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:50:05,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:50:05,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:50:05,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:50:05,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:50:05,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:50:05,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:50:05,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:50:05,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:50:05,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:50:05,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:50:05,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:50:05,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:50:05,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:50:05,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:50:05,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:50:05,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:50:05,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:50:05,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:50:05,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:50:05,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:50:05,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:50:05,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:50:05,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:50:05,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:50:05,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:50:05,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:50:05,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:50:05,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:50:05,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:50:05,047 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:50:05,080 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:50:05,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:50:05,081 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:50:05,081 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:50:05,082 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:50:05,082 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:50:05,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:50:05,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:50:05,083 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:50:05,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:50:05,084 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:50:05,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:50:05,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:50:05,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:50:05,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:50:05,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:50:05,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:50:05,086 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:50:05,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:50:05,086 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:50:05,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:50:05,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:50:05,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:50:05,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:50:05,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:50:05,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:50:05,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:50:05,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:50:05,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:50:05,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:50:05,088 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:50:05,088 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:50:05,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:50:05,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:50:05,089 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8321a367d25b54b23b2762d5ecbfeee51530317d33e488964270d878a9001f5b [2021-12-15 11:50:05,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:50:05,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:50:05,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:50:05,389 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:50:05,390 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:50:05,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label47+token_ring.06.cil-2.c [2021-12-15 11:50:05,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13e0437b8/bf8e27d3fa364031b2fcdb2b6451efe0/FLAG6e7760e72 [2021-12-15 11:50:06,280 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:50:06,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.06.cil-2.c [2021-12-15 11:50:06,334 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13e0437b8/bf8e27d3fa364031b2fcdb2b6451efe0/FLAG6e7760e72 [2021-12-15 11:50:06,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13e0437b8/bf8e27d3fa364031b2fcdb2b6451efe0 [2021-12-15 11:50:06,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:50:06,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:50:06,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:50:06,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:50:06,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:50:06,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:50:06" (1/1) ... [2021-12-15 11:50:06,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26845a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:06, skipping insertion in model container [2021-12-15 11:50:06,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:50:06" (1/1) ... [2021-12-15 11:50:06,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:50:06,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:50:08,592 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_label47+token_ring.06.cil-2.c[377612,377625] [2021-12-15 11:50:08,618 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_label47+token_ring.06.cil-2.c[383339,383352] [2021-12-15 11:50:08,819 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:50:08,829 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:50:09,595 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_label47+token_ring.06.cil-2.c[377612,377625] [2021-12-15 11:50:09,610 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_label47+token_ring.06.cil-2.c[383339,383352] [2021-12-15 11:50:09,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:50:09,693 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:50:09,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:09 WrapperNode [2021-12-15 11:50:09,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:50:09,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:50:09,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:50:09,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:50:09,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:09" (1/1) ... [2021-12-15 11:50:09,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:09" (1/1) ... [2021-12-15 11:50:10,135 INFO L137 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12851 [2021-12-15 11:50:10,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:50:10,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:50:10,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:50:10,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:50:10,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:09" (1/1) ... [2021-12-15 11:50:10,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:09" (1/1) ... [2021-12-15 11:50:10,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:09" (1/1) ... [2021-12-15 11:50:10,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:09" (1/1) ... [2021-12-15 11:50:10,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:09" (1/1) ... [2021-12-15 11:50:10,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:09" (1/1) ... [2021-12-15 11:50:10,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:09" (1/1) ... [2021-12-15 11:50:10,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:50:10,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:50:10,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:50:10,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:50:10,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:09" (1/1) ... [2021-12-15 11:50:10,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:50:10,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:50:10,821 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 11:50:10,899 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 11:50:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:50:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:50:10,958 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:50:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:50:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:50:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:50:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:50:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:50:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:50:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:50:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:50:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:50:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:50:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:50:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:50:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:50:11,068 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:50:11,070 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:50:16,907 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:50:16,938 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:50:16,939 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-15 11:50:16,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:50:16 BoogieIcfgContainer [2021-12-15 11:50:16,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:50:16,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:50:16,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:50:16,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:50:16,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:50:06" (1/3) ... [2021-12-15 11:50:16,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7454e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:50:16, skipping insertion in model container [2021-12-15 11:50:16,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:09" (2/3) ... [2021-12-15 11:50:16,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7454e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:50:16, skipping insertion in model container [2021-12-15 11:50:16,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:50:16" (3/3) ... [2021-12-15 11:50:16,954 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.06.cil-2.c [2021-12-15 11:50:16,960 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:50:16,960 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:50:17,015 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:50:17,021 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 11:50:17,021 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:50:17,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-15 11:50:17,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-15 11:50:17,079 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:50:17,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:50:17,080 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:50:17,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:50:17,087 INFO L85 PathProgramCache]: Analyzing trace with hash -72843931, now seen corresponding path program 1 times [2021-12-15 11:50:17,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:50:17,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141542964] [2021-12-15 11:50:17,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:50:17,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:50:17,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:50:17,144 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 11:50:17,150 INFO L158 Benchmark]: Toolchain (without parser) took 10372.53ms. Allocated memory was 123.7MB in the beginning and 803.2MB in the end (delta: 679.5MB). Free memory was 70.5MB in the beginning and 593.8MB in the end (delta: -523.3MB). Peak memory consumption was 154.7MB. Max. memory is 16.1GB. [2021-12-15 11:50:17,150 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 86.0MB. Free memory was 58.9MB in the beginning and 58.9MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:50:17,151 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2916.92ms. Allocated memory was 123.7MB in the beginning and 239.1MB in the end (delta: 115.3MB). Free memory was 70.5MB in the beginning and 119.2MB in the end (delta: -48.7MB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. [2021-12-15 11:50:17,152 INFO L158 Benchmark]: Boogie Procedure Inliner took 440.90ms. Allocated memory is still 239.1MB. Free memory was 119.2MB in the beginning and 84.3MB in the end (delta: 34.9MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2021-12-15 11:50:17,153 INFO L158 Benchmark]: Boogie Preprocessor took 638.97ms. Allocated memory is still 239.1MB. Free memory was 84.3MB in the beginning and 75.2MB in the end (delta: 9.0MB). Peak memory consumption was 52.5MB. Max. memory is 16.1GB. [2021-12-15 11:50:17,158 INFO L158 Benchmark]: RCFGBuilder took 6168.89ms. Allocated memory was 239.1MB in the beginning and 803.2MB in the end (delta: 564.1MB). Free memory was 75.2MB in the beginning and 615.8MB in the end (delta: -540.6MB). Peak memory consumption was 425.7MB. Max. memory is 16.1GB. [2021-12-15 11:50:17,159 INFO L158 Benchmark]: TraceAbstraction took 199.04ms. Allocated memory is still 803.2MB. Free memory was 614.8MB in the beginning and 593.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-15 11:50:17,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 86.0MB. Free memory was 58.9MB in the beginning and 58.9MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2916.92ms. Allocated memory was 123.7MB in the beginning and 239.1MB in the end (delta: 115.3MB). Free memory was 70.5MB in the beginning and 119.2MB in the end (delta: -48.7MB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 440.90ms. Allocated memory is still 239.1MB. Free memory was 119.2MB in the beginning and 84.3MB in the end (delta: 34.9MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 638.97ms. Allocated memory is still 239.1MB. Free memory was 84.3MB in the beginning and 75.2MB in the end (delta: 9.0MB). Peak memory consumption was 52.5MB. Max. memory is 16.1GB. * RCFGBuilder took 6168.89ms. Allocated memory was 239.1MB in the beginning and 803.2MB in the end (delta: 564.1MB). Free memory was 75.2MB in the beginning and 615.8MB in the end (delta: -540.6MB). Peak memory consumption was 425.7MB. Max. memory is 16.1GB. * TraceAbstraction took 199.04ms. Allocated memory is still 803.2MB. Free memory was 614.8MB in the beginning and 593.8MB in the end (delta: 21.0MB). 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 11:50:17,191 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_label47+token_ring.06.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 8321a367d25b54b23b2762d5ecbfeee51530317d33e488964270d878a9001f5b --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:50:19,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:50:19,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:50:19,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:50:19,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:50:19,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:50:19,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:50:19,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:50:19,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:50:19,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:50:19,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:50:19,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:50:19,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:50:19,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:50:19,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:50:19,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:50:19,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:50:19,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:50:19,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:50:19,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:50:19,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:50:19,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:50:19,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:50:19,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:50:19,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:50:19,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:50:19,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:50:19,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:50:19,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:50:19,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:50:19,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:50:19,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:50:19,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:50:19,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:50:19,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:50:19,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:50:19,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:50:19,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:50:19,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:50:19,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:50:19,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:50:19,261 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:50:19,294 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:50:19,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:50:19,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:50:19,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:50:19,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:50:19,297 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:50:19,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:50:19,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:50:19,298 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:50:19,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:50:19,299 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:50:19,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:50:19,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:50:19,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:50:19,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:50:19,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:50:19,301 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:50:19,301 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:50:19,301 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:50:19,301 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:50:19,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:50:19,301 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:50:19,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:50:19,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:50:19,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:50:19,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:50:19,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:50:19,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:50:19,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:50:19,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:50:19,303 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:50:19,303 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:50:19,304 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:50:19,304 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:50:19,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:50:19,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:50:19,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:50:19,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8321a367d25b54b23b2762d5ecbfeee51530317d33e488964270d878a9001f5b [2021-12-15 11:50:19,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:50:19,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:50:19,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:50:19,639 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:50:19,639 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:50:19,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label47+token_ring.06.cil-2.c [2021-12-15 11:50:19,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25b75bf56/540898ae1b27463eb9acffd93a9b529f/FLAG25ddad54e [2021-12-15 11:50:20,626 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:50:20,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.06.cil-2.c [2021-12-15 11:50:20,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25b75bf56/540898ae1b27463eb9acffd93a9b529f/FLAG25ddad54e [2021-12-15 11:50:21,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25b75bf56/540898ae1b27463eb9acffd93a9b529f [2021-12-15 11:50:21,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:50:21,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:50:21,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:50:21,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:50:21,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:50:21,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:50:21" (1/1) ... [2021-12-15 11:50:21,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a90a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:21, skipping insertion in model container [2021-12-15 11:50:21,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:50:21" (1/1) ... [2021-12-15 11:50:21,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:50:21,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:50:22,854 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_label47+token_ring.06.cil-2.c[377612,377625] [2021-12-15 11:50:22,882 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_label47+token_ring.06.cil-2.c[383339,383352] [2021-12-15 11:50:23,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:50:23,073 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:50:23,876 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_label47+token_ring.06.cil-2.c[377612,377625] [2021-12-15 11:50:23,892 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_label47+token_ring.06.cil-2.c[383339,383352] [2021-12-15 11:50:23,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:50:23,966 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:50:23,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:23 WrapperNode [2021-12-15 11:50:23,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:50:23,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:50:23,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:50:23,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:50:23,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:23" (1/1) ... [2021-12-15 11:50:24,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:23" (1/1) ... [2021-12-15 11:50:24,543 INFO L137 Inliner]: procedures = 57, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12821 [2021-12-15 11:50:24,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:50:24,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:50:24,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:50:24,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:50:24,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:23" (1/1) ... [2021-12-15 11:50:24,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:23" (1/1) ... [2021-12-15 11:50:24,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:23" (1/1) ... [2021-12-15 11:50:24,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:23" (1/1) ... [2021-12-15 11:50:24,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:23" (1/1) ... [2021-12-15 11:50:24,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:23" (1/1) ... [2021-12-15 11:50:24,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:23" (1/1) ... [2021-12-15 11:50:24,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:50:24,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:50:25,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:50:25,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:50:25,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:23" (1/1) ... [2021-12-15 11:50:25,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:50:25,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:50:25,029 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 11:50:25,047 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 11:50:25,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:50:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:50:25,073 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:50:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:50:25,073 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:50:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:50:25,074 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:50:25,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:50:25,074 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:50:25,074 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:50:25,074 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:50:25,074 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:50:25,074 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:50:25,075 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:50:25,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:50:25,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:50:25,302 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:50:25,304 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:50:33,311 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:50:33,341 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:50:33,341 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-15 11:50:33,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:50:33 BoogieIcfgContainer [2021-12-15 11:50:33,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:50:33,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:50:33,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:50:33,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:50:33,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:50:21" (1/3) ... [2021-12-15 11:50:33,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d963477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:50:33, skipping insertion in model container [2021-12-15 11:50:33,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:23" (2/3) ... [2021-12-15 11:50:33,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d963477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:50:33, skipping insertion in model container [2021-12-15 11:50:33,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:50:33" (3/3) ... [2021-12-15 11:50:33,353 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.06.cil-2.c [2021-12-15 11:50:33,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:50:33,358 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:50:33,405 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:50:33,411 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 11:50:33,411 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:50:33,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-15 11:50:33,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-15 11:50:33,513 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:50:33,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:50:33,515 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:50:33,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:50:33,524 INFO L85 PathProgramCache]: Analyzing trace with hash -72843931, now seen corresponding path program 1 times [2021-12-15 11:50:33,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:50:33,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003512062] [2021-12-15 11:50:33,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:50:33,538 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:50:33,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:50:33,547 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 11:50:33,557 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 11:50:33,617 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 11:50:33,817 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 11:50:33,818 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 11:50:33,825 INFO L158 Benchmark]: Toolchain (without parser) took 12774.04ms. Allocated memory was 65.0MB in the beginning and 759.2MB in the end (delta: 694.2MB). Free memory was 28.0MB in the beginning and 286.7MB in the end (delta: -258.7MB). Peak memory consumption was 437.2MB. Max. memory is 16.1GB. [2021-12-15 11:50:33,826 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 65.0MB. Free memory was 47.5MB in the beginning and 47.4MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:50:33,827 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2915.29ms. Allocated memory was 65.0MB in the beginning and 169.9MB in the end (delta: 104.9MB). Free memory was 27.8MB in the beginning and 55.0MB in the end (delta: -27.3MB). Peak memory consumption was 90.5MB. Max. memory is 16.1GB. [2021-12-15 11:50:33,828 INFO L158 Benchmark]: Boogie Procedure Inliner took 575.55ms. Allocated memory was 169.9MB in the beginning and 272.6MB in the end (delta: 102.8MB). Free memory was 55.0MB in the beginning and 151.3MB in the end (delta: -96.3MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2021-12-15 11:50:33,829 INFO L158 Benchmark]: Boogie Preprocessor took 453.65ms. Allocated memory is still 272.6MB. Free memory was 151.3MB in the beginning and 127.2MB in the end (delta: 24.1MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. [2021-12-15 11:50:33,833 INFO L158 Benchmark]: RCFGBuilder took 8346.68ms. Allocated memory was 272.6MB in the beginning and 759.2MB in the end (delta: 486.5MB). Free memory was 126.1MB in the beginning and 312.9MB in the end (delta: -186.8MB). Peak memory consumption was 323.6MB. Max. memory is 16.1GB. [2021-12-15 11:50:33,833 INFO L158 Benchmark]: TraceAbstraction took 476.01ms. Allocated memory is still 759.2MB. Free memory was 311.9MB in the beginning and 286.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 11:50:33,838 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 65.0MB. Free memory was 47.5MB in the beginning and 47.4MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2915.29ms. Allocated memory was 65.0MB in the beginning and 169.9MB in the end (delta: 104.9MB). Free memory was 27.8MB in the beginning and 55.0MB in the end (delta: -27.3MB). Peak memory consumption was 90.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 575.55ms. Allocated memory was 169.9MB in the beginning and 272.6MB in the end (delta: 102.8MB). Free memory was 55.0MB in the beginning and 151.3MB in the end (delta: -96.3MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 453.65ms. Allocated memory is still 272.6MB. Free memory was 151.3MB in the beginning and 127.2MB in the end (delta: 24.1MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. * RCFGBuilder took 8346.68ms. Allocated memory was 272.6MB in the beginning and 759.2MB in the end (delta: 486.5MB). Free memory was 126.1MB in the beginning and 312.9MB in the end (delta: -186.8MB). Peak memory consumption was 323.6MB. Max. memory is 16.1GB. * TraceAbstraction took 476.01ms. Allocated memory is still 759.2MB. Free memory was 311.9MB in the beginning and 286.7MB 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 11:50:33,878 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