./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label40+token_ring.13.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_label40+token_ring.13.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 19aa3a10df20aa66b298603653689263cc3fd1e3f00b1be832baa1f64aefda99 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:45:16,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:45:16,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:45:16,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:45:16,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:45:16,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:45:16,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:45:16,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:45:16,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:45:16,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:45:16,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:45:16,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:45:16,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:45:16,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:45:16,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:45:16,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:45:16,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:45:16,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:45:16,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:45:16,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:45:16,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:45:16,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:45:16,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:45:16,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:45:16,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:45:16,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:45:16,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:45:16,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:45:16,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:45:16,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:45:16,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:45:16,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:45:16,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:45:16,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:45:16,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:45:16,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:45:16,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:45:16,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:45:16,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:45:16,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:45:16,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:45:16,119 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:45:16,150 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:45:16,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:45:16,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:45:16,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:45:16,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:45:16,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:45:16,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:45:16,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:45:16,159 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:45:16,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:45:16,160 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:45:16,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:45:16,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:45:16,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:45:16,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:45:16,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:45:16,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:45:16,161 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:45:16,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:45:16,161 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:45:16,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:45:16,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:45:16,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:45:16,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:45:16,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:45:16,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:45:16,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:45:16,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:45:16,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:45:16,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:45:16,163 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:45:16,164 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:45:16,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:45:16,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:45:16,164 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19aa3a10df20aa66b298603653689263cc3fd1e3f00b1be832baa1f64aefda99 [2021-12-15 11:45:16,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:45:16,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:45:16,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:45:16,466 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:45:16,466 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:45:16,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label40+token_ring.13.cil-2.c [2021-12-15 11:45:16,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a22f7b34/93080c544aaa4d368b3ae90ced617996/FLAG98709fbfe [2021-12-15 11:45:17,442 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:45:17,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label40+token_ring.13.cil-2.c [2021-12-15 11:45:17,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a22f7b34/93080c544aaa4d368b3ae90ced617996/FLAG98709fbfe [2021-12-15 11:45:18,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a22f7b34/93080c544aaa4d368b3ae90ced617996 [2021-12-15 11:45:18,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:45:18,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:45:18,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:45:18,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:45:18,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:45:18,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:45:18" (1/1) ... [2021-12-15 11:45:18,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e991dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:18, skipping insertion in model container [2021-12-15 11:45:18,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:45:18" (1/1) ... [2021-12-15 11:45:18,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:45:18,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:45:19,870 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_label40+token_ring.13.cil-2.c[377069,377082] [2021-12-15 11:45:19,896 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_label40+token_ring.13.cil-2.c[383339,383352] [2021-12-15 11:45:20,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:45:20,182 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:45:20,892 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_label40+token_ring.13.cil-2.c[377069,377082] [2021-12-15 11:45:20,900 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_label40+token_ring.13.cil-2.c[383339,383352] [2021-12-15 11:45:20,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:45:20,995 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:45:20,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:20 WrapperNode [2021-12-15 11:45:20,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:45:20,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:45:20,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:45:20,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:45:21,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:20" (1/1) ... [2021-12-15 11:45:21,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:20" (1/1) ... [2021-12-15 11:45:21,418 INFO L137 Inliner]: procedures = 70, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13257 [2021-12-15 11:45:21,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:45:21,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:45:21,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:45:21,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:45:21,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:20" (1/1) ... [2021-12-15 11:45:21,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:20" (1/1) ... [2021-12-15 11:45:21,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:20" (1/1) ... [2021-12-15 11:45:21,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:20" (1/1) ... [2021-12-15 11:45:21,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:20" (1/1) ... [2021-12-15 11:45:21,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:20" (1/1) ... [2021-12-15 11:45:21,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:20" (1/1) ... [2021-12-15 11:45:21,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:45:21,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:45:21,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:45:21,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:45:21,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:20" (1/1) ... [2021-12-15 11:45:21,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:45:22,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:45:22,045 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 11:45:22,114 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 11:45:22,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:45:22,142 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:45:22,142 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:45:22,143 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:45:22,143 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:45:22,143 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:45:22,143 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:45:22,143 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:45:22,143 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:45:22,143 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:45:22,144 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:45:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:45:22,144 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:45:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:45:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:45:22,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:45:22,365 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:45:22,367 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:45:28,428 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:45:28,460 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:45:28,461 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-15 11:45:28,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:45:28 BoogieIcfgContainer [2021-12-15 11:45:28,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:45:28,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:45:28,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:45:28,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:45:28,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:45:18" (1/3) ... [2021-12-15 11:45:28,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7657b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:45:28, skipping insertion in model container [2021-12-15 11:45:28,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:20" (2/3) ... [2021-12-15 11:45:28,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7657b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:45:28, skipping insertion in model container [2021-12-15 11:45:28,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:45:28" (3/3) ... [2021-12-15 11:45:28,477 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.13.cil-2.c [2021-12-15 11:45:28,482 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:45:28,482 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:45:28,548 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:45:28,556 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 11:45:28,556 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:45:28,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-15 11:45:28,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-15 11:45:28,630 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:45:28,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:28,631 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:45:28,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:45:28,636 INFO L85 PathProgramCache]: Analyzing trace with hash -521467325, now seen corresponding path program 1 times [2021-12-15 11:45:28,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:45:28,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25435310] [2021-12-15 11:45:28,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:45:28,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:45:28,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:45:28,699 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 11:45:28,705 INFO L158 Benchmark]: Toolchain (without parser) took 10654.74ms. Allocated memory was 113.2MB in the beginning and 908.1MB in the end (delta: 794.8MB). Free memory was 75.2MB in the beginning and 648.6MB in the end (delta: -573.4MB). Peak memory consumption was 220.7MB. Max. memory is 16.1GB. [2021-12-15 11:45:28,705 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:45:28,706 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2946.27ms. Allocated memory was 113.2MB in the beginning and 184.5MB in the end (delta: 71.3MB). Free memory was 75.2MB in the beginning and 59.1MB in the end (delta: 16.0MB). Peak memory consumption was 112.9MB. Max. memory is 16.1GB. [2021-12-15 11:45:28,706 INFO L158 Benchmark]: Boogie Procedure Inliner took 421.60ms. Allocated memory was 184.5MB in the beginning and 278.9MB in the end (delta: 94.4MB). Free memory was 59.1MB in the beginning and 112.5MB in the end (delta: -53.4MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2021-12-15 11:45:28,707 INFO L158 Benchmark]: Boogie Preprocessor took 541.77ms. Allocated memory is still 278.9MB. Free memory was 112.5MB in the beginning and 117.9MB in the end (delta: -5.3MB). Peak memory consumption was 77.2MB. Max. memory is 16.1GB. [2021-12-15 11:45:28,707 INFO L158 Benchmark]: RCFGBuilder took 6505.29ms. Allocated memory was 278.9MB in the beginning and 908.1MB in the end (delta: 629.1MB). Free memory was 117.9MB in the beginning and 671.7MB in the end (delta: -553.8MB). Peak memory consumption was 285.2MB. Max. memory is 16.1GB. [2021-12-15 11:45:28,708 INFO L158 Benchmark]: TraceAbstraction took 232.95ms. Allocated memory is still 908.1MB. Free memory was 671.7MB in the beginning and 648.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-15 11:45:28,711 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2946.27ms. Allocated memory was 113.2MB in the beginning and 184.5MB in the end (delta: 71.3MB). Free memory was 75.2MB in the beginning and 59.1MB in the end (delta: 16.0MB). Peak memory consumption was 112.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 421.60ms. Allocated memory was 184.5MB in the beginning and 278.9MB in the end (delta: 94.4MB). Free memory was 59.1MB in the beginning and 112.5MB in the end (delta: -53.4MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 541.77ms. Allocated memory is still 278.9MB. Free memory was 112.5MB in the beginning and 117.9MB in the end (delta: -5.3MB). Peak memory consumption was 77.2MB. Max. memory is 16.1GB. * RCFGBuilder took 6505.29ms. Allocated memory was 278.9MB in the beginning and 908.1MB in the end (delta: 629.1MB). Free memory was 117.9MB in the beginning and 671.7MB in the end (delta: -553.8MB). Peak memory consumption was 285.2MB. Max. memory is 16.1GB. * TraceAbstraction took 232.95ms. Allocated memory is still 908.1MB. Free memory was 671.7MB in the beginning and 648.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:45:28,749 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_label40+token_ring.13.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 19aa3a10df20aa66b298603653689263cc3fd1e3f00b1be832baa1f64aefda99 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:45:30,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:45:30,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:45:30,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:45:30,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:45:30,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:45:30,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:45:30,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:45:30,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:45:30,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:45:30,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:45:30,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:45:30,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:45:30,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:45:30,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:45:30,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:45:30,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:45:30,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:45:30,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:45:30,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:45:30,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:45:30,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:45:30,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:45:30,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:45:30,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:45:30,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:45:30,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:45:30,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:45:30,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:45:30,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:45:30,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:45:30,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:45:30,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:45:30,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:45:30,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:45:30,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:45:30,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:45:30,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:45:30,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:45:30,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:45:30,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:45:30,830 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:45:30,863 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:45:30,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:45:30,865 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:45:30,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:45:30,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:45:30,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:45:30,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:45:30,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:45:30,868 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:45:30,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:45:30,869 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:45:30,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:45:30,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:45:30,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:45:30,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:45:30,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:45:30,870 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:45:30,870 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:45:30,877 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:45:30,877 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:45:30,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:45:30,878 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:45:30,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:45:30,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:45:30,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:45:30,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:45:30,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:45:30,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:45:30,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:45:30,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:45:30,880 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:45:30,880 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:45:30,880 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:45:30,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:45:30,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:45:30,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:45:30,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:45:30,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19aa3a10df20aa66b298603653689263cc3fd1e3f00b1be832baa1f64aefda99 [2021-12-15 11:45:31,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:45:31,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:45:31,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:45:31,233 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:45:31,234 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:45:31,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label40+token_ring.13.cil-2.c [2021-12-15 11:45:31,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec262393c/d36194211b904bbfb323af2684821c3d/FLAG307bbeb6d [2021-12-15 11:45:32,331 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:45:32,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label40+token_ring.13.cil-2.c [2021-12-15 11:45:32,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec262393c/d36194211b904bbfb323af2684821c3d/FLAG307bbeb6d [2021-12-15 11:45:32,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec262393c/d36194211b904bbfb323af2684821c3d [2021-12-15 11:45:32,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:45:32,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:45:32,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:45:32,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:45:32,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:45:32,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:45:32" (1/1) ... [2021-12-15 11:45:32,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a910797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:32, skipping insertion in model container [2021-12-15 11:45:32,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:45:32" (1/1) ... [2021-12-15 11:45:32,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:45:33,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:45:34,634 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_label40+token_ring.13.cil-2.c[377069,377082] [2021-12-15 11:45:34,664 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_label40+token_ring.13.cil-2.c[383339,383352] [2021-12-15 11:45:34,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:45:35,001 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:45:35,847 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_label40+token_ring.13.cil-2.c[377069,377082] [2021-12-15 11:45:35,855 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_label40+token_ring.13.cil-2.c[383339,383352] [2021-12-15 11:45:35,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:45:35,965 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:45:35,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:35 WrapperNode [2021-12-15 11:45:35,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:45:35,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:45:35,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:45:35,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:45:35,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:35" (1/1) ... [2021-12-15 11:45:36,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:35" (1/1) ... [2021-12-15 11:45:36,593 INFO L137 Inliner]: procedures = 71, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13213 [2021-12-15 11:45:36,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:45:36,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:45:36,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:45:36,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:45:36,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:35" (1/1) ... [2021-12-15 11:45:36,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:35" (1/1) ... [2021-12-15 11:45:36,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:35" (1/1) ... [2021-12-15 11:45:36,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:35" (1/1) ... [2021-12-15 11:45:37,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:35" (1/1) ... [2021-12-15 11:45:37,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:35" (1/1) ... [2021-12-15 11:45:37,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:35" (1/1) ... [2021-12-15 11:45:37,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:45:37,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:45:37,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:45:37,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:45:37,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:35" (1/1) ... [2021-12-15 11:45:37,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:45:37,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:45:37,241 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 11:45:37,251 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 11:45:37,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:45:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:45:37,278 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:45:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:45:37,278 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:45:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:45:37,278 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:45:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:45:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:45:37,279 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:45:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:45:37,279 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:45:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:45:37,279 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:45:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:45:37,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:45:37,463 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:45:37,464 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:45:45,645 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:45:45,678 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:45:45,679 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-15 11:45:45,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:45:45 BoogieIcfgContainer [2021-12-15 11:45:45,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:45:45,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:45:45,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:45:45,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:45:45,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:45:32" (1/3) ... [2021-12-15 11:45:45,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115bd9e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:45:45, skipping insertion in model container [2021-12-15 11:45:45,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:35" (2/3) ... [2021-12-15 11:45:45,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115bd9e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:45:45, skipping insertion in model container [2021-12-15 11:45:45,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:45:45" (3/3) ... [2021-12-15 11:45:45,691 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.13.cil-2.c [2021-12-15 11:45:45,695 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:45:45,696 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:45:45,745 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:45:45,751 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 11:45:45,752 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:45:45,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-15 11:45:45,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-15 11:45:45,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:45:45,830 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:45,831 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:45:45,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:45:45,836 INFO L85 PathProgramCache]: Analyzing trace with hash -521467325, now seen corresponding path program 1 times [2021-12-15 11:45:45,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:45:45,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40458642] [2021-12-15 11:45:45,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:45:45,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:45:45,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:45:45,853 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 11:45:45,859 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 11:45:45,916 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 11:45:46,111 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 11:45:46,112 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 11:45:46,116 INFO L158 Benchmark]: Toolchain (without parser) took 13316.43ms. Allocated memory was 58.7MB in the beginning and 796.9MB in the end (delta: 738.2MB). Free memory was 23.6MB in the beginning and 354.7MB in the end (delta: -331.2MB). Peak memory consumption was 408.4MB. Max. memory is 16.1GB. [2021-12-15 11:45:46,116 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 48.2MB. Free memory was 30.5MB in the beginning and 30.4MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:45:46,117 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3166.25ms. Allocated memory was 58.7MB in the beginning and 174.1MB in the end (delta: 115.3MB). Free memory was 23.4MB in the beginning and 74.3MB in the end (delta: -51.0MB). Peak memory consumption was 92.1MB. Max. memory is 16.1GB. [2021-12-15 11:45:46,118 INFO L158 Benchmark]: Boogie Procedure Inliner took 628.54ms. Allocated memory was 174.1MB in the beginning and 308.3MB in the end (delta: 134.2MB). Free memory was 74.3MB in the beginning and 172.3MB in the end (delta: -97.9MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. [2021-12-15 11:45:46,118 INFO L158 Benchmark]: Boogie Preprocessor took 608.00ms. Allocated memory is still 308.3MB. Free memory was 172.3MB in the beginning and 160.7MB in the end (delta: 11.5MB). Peak memory consumption was 72.4MB. Max. memory is 16.1GB. [2021-12-15 11:45:46,118 INFO L158 Benchmark]: RCFGBuilder took 8477.63ms. Allocated memory was 308.3MB in the beginning and 796.9MB in the end (delta: 488.6MB). Free memory was 160.7MB in the beginning and 382.0MB in the end (delta: -221.2MB). Peak memory consumption was 305.1MB. Max. memory is 16.1GB. [2021-12-15 11:45:46,119 INFO L158 Benchmark]: TraceAbstraction took 429.56ms. Allocated memory is still 796.9MB. Free memory was 382.0MB in the beginning and 355.8MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 11:45:46,122 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 48.2MB. Free memory was 30.5MB in the beginning and 30.4MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3166.25ms. Allocated memory was 58.7MB in the beginning and 174.1MB in the end (delta: 115.3MB). Free memory was 23.4MB in the beginning and 74.3MB in the end (delta: -51.0MB). Peak memory consumption was 92.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 628.54ms. Allocated memory was 174.1MB in the beginning and 308.3MB in the end (delta: 134.2MB). Free memory was 74.3MB in the beginning and 172.3MB in the end (delta: -97.9MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 608.00ms. Allocated memory is still 308.3MB. Free memory was 172.3MB in the beginning and 160.7MB in the end (delta: 11.5MB). Peak memory consumption was 72.4MB. Max. memory is 16.1GB. * RCFGBuilder took 8477.63ms. Allocated memory was 308.3MB in the beginning and 796.9MB in the end (delta: 488.6MB). Free memory was 160.7MB in the beginning and 382.0MB in the end (delta: -221.2MB). Peak memory consumption was 305.1MB. Max. memory is 16.1GB. * TraceAbstraction took 429.56ms. Allocated memory is still 796.9MB. Free memory was 382.0MB in the beginning and 355.8MB in the end (delta: 26.2MB). 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 11:45:46,150 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