./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.06.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 653a8e34239233d69d9a38d78b85981ab63654836b879da54ad0b88422f00ccf --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:47:07,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:47:07,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:47:08,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:47:08,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:47:08,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:47:08,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:47:08,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:47:08,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:47:08,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:47:08,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:47:08,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:47:08,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:47:08,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:47:08,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:47:08,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:47:08,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:47:08,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:47:08,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:47:08,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:47:08,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:47:08,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:47:08,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:47:08,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:47:08,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:47:08,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:47:08,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:47:08,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:47:08,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:47:08,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:47:08,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:47:08,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:47:08,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:47:08,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:47:08,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:47:08,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:47:08,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:47:08,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:47:08,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:47:08,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:47:08,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:47:08,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:47:08,105 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:47:08,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:47:08,105 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:47:08,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:47:08,106 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:47:08,106 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:47:08,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:47:08,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:47:08,107 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:47:08,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:47:08,108 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:47:08,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:47:08,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:47:08,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:47:08,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:47:08,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:47:08,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:47:08,109 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:47:08,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:47:08,109 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:47:08,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:47:08,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:47:08,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:47:08,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:47:08,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:47:08,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:47:08,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:47:08,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:47:08,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:47:08,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:47:08,112 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:47:08,112 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:47:08,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:47:08,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:47:08,112 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 653a8e34239233d69d9a38d78b85981ab63654836b879da54ad0b88422f00ccf [2021-12-15 11:47:08,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:47:08,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:47:08,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:47:08,358 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:47:08,359 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:47:08,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.06.cil-1.c [2021-12-15 11:47:08,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aebd76d5f/e54207305e7d4790b11b467ee549579a/FLAGe401db64b [2021-12-15 11:47:09,107 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:47:09,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.06.cil-1.c [2021-12-15 11:47:09,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aebd76d5f/e54207305e7d4790b11b467ee549579a/FLAGe401db64b [2021-12-15 11:47:09,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aebd76d5f/e54207305e7d4790b11b467ee549579a [2021-12-15 11:47:09,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:47:09,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:47:09,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:47:09,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:47:09,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:47:09,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:47:09" (1/1) ... [2021-12-15 11:47:09,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a1a6cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:09, skipping insertion in model container [2021-12-15 11:47:09,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:47:09" (1/1) ... [2021-12-15 11:47:09,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:47:09,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:47:10,761 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_label43+token_ring.06.cil-1.c[381679,381692] [2021-12-15 11:47:10,784 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_label43+token_ring.06.cil-1.c[383339,383352] [2021-12-15 11:47:11,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:47:11,086 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:47:12,354 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_label43+token_ring.06.cil-1.c[381679,381692] [2021-12-15 11:47:12,371 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_label43+token_ring.06.cil-1.c[383339,383352] [2021-12-15 11:47:12,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:47:12,491 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:47:12,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:12 WrapperNode [2021-12-15 11:47:12,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:47:12,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:47:12,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:47:12,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:47:12,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:12" (1/1) ... [2021-12-15 11:47:12,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:12" (1/1) ... [2021-12-15 11:47:12,888 INFO L137 Inliner]: procedures = 56, calls = 60, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 12856 [2021-12-15 11:47:12,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:47:12,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:47:12,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:47:12,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:47:12,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:12" (1/1) ... [2021-12-15 11:47:12,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:12" (1/1) ... [2021-12-15 11:47:12,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:12" (1/1) ... [2021-12-15 11:47:12,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:12" (1/1) ... [2021-12-15 11:47:13,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:12" (1/1) ... [2021-12-15 11:47:13,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:12" (1/1) ... [2021-12-15 11:47:13,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:12" (1/1) ... [2021-12-15 11:47:13,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:47:13,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:47:13,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:47:13,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:47:13,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:12" (1/1) ... [2021-12-15 11:47:13,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:47:13,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:47:13,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:47:13,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:47:13,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:47:13,482 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:47:13,482 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:47:13,482 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:47:13,483 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:47:13,483 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:47:13,483 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:47:13,483 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-15 11:47:13,483 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-15 11:47:13,483 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:47:13,483 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:47:13,483 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:47:13,483 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:47:13,483 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:47:13,483 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:47:13,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:47:13,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:47:13,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:47:13,655 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:47:13,657 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:47:18,071 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:47:18,088 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:47:18,088 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-15 11:47:18,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:18 BoogieIcfgContainer [2021-12-15 11:47:18,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:47:18,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:47:18,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:47:18,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:47:18,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:47:09" (1/3) ... [2021-12-15 11:47:18,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdf7995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:18, skipping insertion in model container [2021-12-15 11:47:18,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:12" (2/3) ... [2021-12-15 11:47:18,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdf7995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:18, skipping insertion in model container [2021-12-15 11:47:18,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:18" (3/3) ... [2021-12-15 11:47:18,097 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.06.cil-1.c [2021-12-15 11:47:18,100 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:47:18,100 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:47:18,143 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:47:18,147 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:47:18,147 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:47:18,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 2423 states, 2391 states have (on average 1.8515265579255542) internal successors, (4427), 2396 states have internal predecessors, (4427), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-15 11:47:18,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-15 11:47:18,196 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:47:18,196 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, 1] [2021-12-15 11:47:18,197 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:47:18,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:47:18,200 INFO L85 PathProgramCache]: Analyzing trace with hash 787057146, now seen corresponding path program 1 times [2021-12-15 11:47:18,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:47:18,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129175927] [2021-12-15 11:47:18,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:47:18,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:47:18,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:47:18,259 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:47:18,263 INFO L158 Benchmark]: Toolchain (without parser) took 9063.13ms. Allocated memory was 96.5MB in the beginning and 1.1GB in the end (delta: 985.7MB). Free memory was 51.7MB in the beginning and 727.1MB in the end (delta: -675.4MB). Peak memory consumption was 309.7MB. Max. memory is 16.1GB. [2021-12-15 11:47:18,263 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 79.7MB. Free memory was 49.9MB in the beginning and 49.9MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:47:18,264 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3303.53ms. Allocated memory was 96.5MB in the beginning and 270.5MB in the end (delta: 174.1MB). Free memory was 51.7MB in the beginning and 172.4MB in the end (delta: -120.7MB). Peak memory consumption was 118.9MB. Max. memory is 16.1GB. [2021-12-15 11:47:18,264 INFO L158 Benchmark]: Boogie Procedure Inliner took 384.19ms. Allocated memory is still 270.5MB. Free memory was 172.4MB in the beginning and 136.6MB in the end (delta: 35.7MB). Peak memory consumption was 106.0MB. Max. memory is 16.1GB. [2021-12-15 11:47:18,265 INFO L158 Benchmark]: Boogie Preprocessor took 411.17ms. Allocated memory was 270.5MB in the beginning and 541.1MB in the end (delta: 270.5MB). Free memory was 136.6MB in the beginning and 379.9MB in the end (delta: -243.3MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. [2021-12-15 11:47:18,265 INFO L158 Benchmark]: RCFGBuilder took 4789.87ms. Allocated memory was 541.1MB in the beginning and 1.1GB in the end (delta: 541.1MB). Free memory was 379.9MB in the beginning and 749.1MB in the end (delta: -369.2MB). Peak memory consumption was 281.0MB. Max. memory is 16.1GB. [2021-12-15 11:47:18,266 INFO L158 Benchmark]: TraceAbstraction took 169.35ms. Allocated memory is still 1.1GB. Free memory was 748.0MB in the beginning and 727.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-15 11:47:18,268 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 79.7MB. Free memory was 49.9MB in the beginning and 49.9MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3303.53ms. Allocated memory was 96.5MB in the beginning and 270.5MB in the end (delta: 174.1MB). Free memory was 51.7MB in the beginning and 172.4MB in the end (delta: -120.7MB). Peak memory consumption was 118.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 384.19ms. Allocated memory is still 270.5MB. Free memory was 172.4MB in the beginning and 136.6MB in the end (delta: 35.7MB). Peak memory consumption was 106.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 411.17ms. Allocated memory was 270.5MB in the beginning and 541.1MB in the end (delta: 270.5MB). Free memory was 136.6MB in the beginning and 379.9MB in the end (delta: -243.3MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. * RCFGBuilder took 4789.87ms. Allocated memory was 541.1MB in the beginning and 1.1GB in the end (delta: 541.1MB). Free memory was 379.9MB in the beginning and 749.1MB in the end (delta: -369.2MB). Peak memory consumption was 281.0MB. Max. memory is 16.1GB. * TraceAbstraction took 169.35ms. Allocated memory is still 1.1GB. Free memory was 748.0MB in the beginning and 727.1MB 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 11:47:18,294 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_label43+token_ring.06.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 653a8e34239233d69d9a38d78b85981ab63654836b879da54ad0b88422f00ccf --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:47:20,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:47:20,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:47:20,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:47:20,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:47:20,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:47:20,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:47:20,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:47:20,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:47:20,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:47:20,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:47:20,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:47:20,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:47:20,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:47:20,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:47:20,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:47:20,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:47:20,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:47:20,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:47:20,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:47:20,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:47:20,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:47:20,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:47:20,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:47:20,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:47:20,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:47:20,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:47:20,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:47:20,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:47:20,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:47:20,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:47:20,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:47:20,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:47:20,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:47:20,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:47:20,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:47:20,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:47:20,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:47:20,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:47:20,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:47:20,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:47:20,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:47:20,200 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:47:20,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:47:20,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:47:20,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:47:20,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:47:20,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:47:20,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:47:20,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:47:20,204 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:47:20,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:47:20,205 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:47:20,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:47:20,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:47:20,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:47:20,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:47:20,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:47:20,206 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:47:20,206 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:47:20,206 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:47:20,206 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:47:20,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:47:20,207 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:47:20,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:47:20,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:47:20,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:47:20,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:47:20,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:47:20,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:47:20,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:47:20,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:47:20,208 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:47:20,208 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:47:20,208 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:47:20,209 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:47:20,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:47:20,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:47:20,209 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:47:20,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 653a8e34239233d69d9a38d78b85981ab63654836b879da54ad0b88422f00ccf [2021-12-15 11:47:20,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:47:20,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:47:20,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:47:20,591 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:47:20,591 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:47:20,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.06.cil-1.c [2021-12-15 11:47:20,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34de87458/02ea0a7e0d6e4202994eb4b9767468b7/FLAG6e299723a [2021-12-15 11:47:21,356 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:47:21,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.06.cil-1.c [2021-12-15 11:47:21,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34de87458/02ea0a7e0d6e4202994eb4b9767468b7/FLAG6e299723a [2021-12-15 11:47:21,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34de87458/02ea0a7e0d6e4202994eb4b9767468b7 [2021-12-15 11:47:21,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:47:21,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:47:21,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:47:21,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:47:21,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:47:21,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:47:21" (1/1) ... [2021-12-15 11:47:21,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@704ca657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:21, skipping insertion in model container [2021-12-15 11:47:21,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:47:21" (1/1) ... [2021-12-15 11:47:21,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:47:21,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:47:23,984 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_label43+token_ring.06.cil-1.c[381679,381692] [2021-12-15 11:47:24,007 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_label43+token_ring.06.cil-1.c[383339,383352] [2021-12-15 11:47:24,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:47:24,195 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:47:24,872 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_label43+token_ring.06.cil-1.c[381679,381692] [2021-12-15 11:47:24,885 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_label43+token_ring.06.cil-1.c[383339,383352] [2021-12-15 11:47:24,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:47:25,003 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:47:25,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:25 WrapperNode [2021-12-15 11:47:25,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:47:25,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:47:25,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:47:25,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:47:25,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:25" (1/1) ... [2021-12-15 11:47:25,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:25" (1/1) ... [2021-12-15 11:47:25,344 INFO L137 Inliner]: procedures = 57, calls = 60, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 12825 [2021-12-15 11:47:25,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:47:25,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:47:25,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:47:25,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:47:25,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:25" (1/1) ... [2021-12-15 11:47:25,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:25" (1/1) ... [2021-12-15 11:47:25,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:25" (1/1) ... [2021-12-15 11:47:25,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:25" (1/1) ... [2021-12-15 11:47:25,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:25" (1/1) ... [2021-12-15 11:47:25,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:25" (1/1) ... [2021-12-15 11:47:25,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:25" (1/1) ... [2021-12-15 11:47:26,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:47:26,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:47:26,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:47:26,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:47:26,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:25" (1/1) ... [2021-12-15 11:47:26,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:47:26,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:47:26,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:47:26,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:47:26,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:47:26,115 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:47:26,115 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:47:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:47:26,116 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:47:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:47:26,116 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:47:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:47:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-15 11:47:26,116 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-15 11:47:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:47:26,116 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:47:26,117 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:47:26,117 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:47:26,117 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:47:26,117 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:47:26,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:47:26,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:47:26,194 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:47:26,195 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:47:33,084 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:47:33,138 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:47:33,138 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-15 11:47:33,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:33 BoogieIcfgContainer [2021-12-15 11:47:33,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:47:33,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:47:33,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:47:33,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:47:33,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:47:21" (1/3) ... [2021-12-15 11:47:33,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e16b313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:33, skipping insertion in model container [2021-12-15 11:47:33,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:25" (2/3) ... [2021-12-15 11:47:33,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e16b313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:33, skipping insertion in model container [2021-12-15 11:47:33,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:33" (3/3) ... [2021-12-15 11:47:33,148 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.06.cil-1.c [2021-12-15 11:47:33,151 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:47:33,151 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:47:33,184 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:47:33,189 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:47:33,189 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:47:33,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 2423 states, 2391 states have (on average 1.8515265579255542) internal successors, (4427), 2396 states have internal predecessors, (4427), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-15 11:47:33,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-15 11:47:33,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:47:33,248 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, 1] [2021-12-15 11:47:33,248 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:47:33,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:47:33,252 INFO L85 PathProgramCache]: Analyzing trace with hash 787057146, now seen corresponding path program 1 times [2021-12-15 11:47:33,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:47:33,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122958688] [2021-12-15 11:47:33,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:47:33,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:47:33,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:47:33,280 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 11:47:33,283 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 11:47:33,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 11:47:33,556 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 11:47:33,557 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 11:47:33,560 INFO L158 Benchmark]: Toolchain (without parser) took 11883.26ms. Allocated memory was 81.8MB in the beginning and 981.5MB in the end (delta: 899.7MB). Free memory was 45.5MB in the beginning and 463.0MB in the end (delta: -417.4MB). Peak memory consumption was 484.2MB. Max. memory is 16.1GB. [2021-12-15 11:47:33,561 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory is still 36.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:47:33,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3326.06ms. Allocated memory was 81.8MB in the beginning and 245.4MB in the end (delta: 163.6MB). Free memory was 45.2MB in the beginning and 152.5MB in the end (delta: -107.3MB). Peak memory consumption was 135.2MB. Max. memory is 16.1GB. [2021-12-15 11:47:33,562 INFO L158 Benchmark]: Boogie Procedure Inliner took 341.85ms. Allocated memory is still 245.4MB. Free memory was 152.5MB in the beginning and 115.7MB in the end (delta: 36.8MB). Peak memory consumption was 111.2MB. Max. memory is 16.1GB. [2021-12-15 11:47:33,562 INFO L158 Benchmark]: Boogie Preprocessor took 700.21ms. Allocated memory was 245.4MB in the beginning and 490.7MB in the end (delta: 245.4MB). Free memory was 115.7MB in the beginning and 342.2MB in the end (delta: -226.5MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. [2021-12-15 11:47:33,563 INFO L158 Benchmark]: RCFGBuilder took 7094.57ms. Allocated memory was 490.7MB in the beginning and 981.5MB in the end (delta: 490.7MB). Free memory was 342.2MB in the beginning and 489.2MB in the end (delta: -147.0MB). Peak memory consumption was 444.8MB. Max. memory is 16.1GB. [2021-12-15 11:47:33,563 INFO L158 Benchmark]: TraceAbstraction took 415.46ms. Allocated memory is still 981.5MB. Free memory was 488.1MB in the beginning and 463.0MB in the end (delta: 25.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-12-15 11:47:33,566 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory is still 36.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3326.06ms. Allocated memory was 81.8MB in the beginning and 245.4MB in the end (delta: 163.6MB). Free memory was 45.2MB in the beginning and 152.5MB in the end (delta: -107.3MB). Peak memory consumption was 135.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 341.85ms. Allocated memory is still 245.4MB. Free memory was 152.5MB in the beginning and 115.7MB in the end (delta: 36.8MB). Peak memory consumption was 111.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 700.21ms. Allocated memory was 245.4MB in the beginning and 490.7MB in the end (delta: 245.4MB). Free memory was 115.7MB in the beginning and 342.2MB in the end (delta: -226.5MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. * RCFGBuilder took 7094.57ms. Allocated memory was 490.7MB in the beginning and 981.5MB in the end (delta: 490.7MB). Free memory was 342.2MB in the beginning and 489.2MB in the end (delta: -147.0MB). Peak memory consumption was 444.8MB. Max. memory is 16.1GB. * TraceAbstraction took 415.46ms. Allocated memory is still 981.5MB. Free memory was 488.1MB in the beginning and 463.0MB in the end (delta: 25.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:47:33,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable