./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.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 cfaa727818e9d1eb335a3637dac175808db4c2bbb7c5a7c3c9835dd5611700d7 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:45:49,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:45:49,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:45:49,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:45:49,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:45:49,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:45:49,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:45:49,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:45:49,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:45:49,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:45:49,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:45:49,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:45:49,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:45:49,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:45:49,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:45:49,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:45:49,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:45:49,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:45:49,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:45:49,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:45:49,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:45:49,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:45:49,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:45:49,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:45:49,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:45:49,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:45:49,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:45:49,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:45:49,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:45:49,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:45:49,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:45:49,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:45:49,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:45:49,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:45:49,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:45:49,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:45:49,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:45:49,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:45:49,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:45:49,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:45:49,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:45:49,412 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:45:49,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:45:49,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:45:49,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:45:49,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:45:49,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:45:49,446 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:45:49,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:45:49,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:45:49,447 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:45:49,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:45:49,448 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:45:49,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:45:49,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:45:49,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:45:49,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:45:49,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:45:49,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:45:49,449 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:45:49,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:45:49,449 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:45:49,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:45:49,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:45:49,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:45:49,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:45:49,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:45:49,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:45:49,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:45:49,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:45:49,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:45:49,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:45:49,452 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:45:49,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:45:49,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:45:49,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:45:49,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfaa727818e9d1eb335a3637dac175808db4c2bbb7c5a7c3c9835dd5611700d7 [2021-12-15 11:45:49,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:45:49,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:45:49,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:45:49,731 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:45:49,731 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:45:49,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c [2021-12-15 11:45:49,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d63563b42/2af21aa4cdbb4aaaa8031d4447a24347/FLAG555887734 [2021-12-15 11:45:50,588 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:45:50,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c [2021-12-15 11:45:50,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d63563b42/2af21aa4cdbb4aaaa8031d4447a24347/FLAG555887734 [2021-12-15 11:45:51,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d63563b42/2af21aa4cdbb4aaaa8031d4447a24347 [2021-12-15 11:45:51,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:45:51,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:45:51,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:45:51,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:45:51,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:45:51,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:45:51" (1/1) ... [2021-12-15 11:45:51,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@688b51fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:51, skipping insertion in model container [2021-12-15 11:45:51,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:45:51" (1/1) ... [2021-12-15 11:45:51,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:45:51,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:45:52,811 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[378560,378573] [2021-12-15 11:45:52,842 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[383339,383352] [2021-12-15 11:45:52,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:45:52,985 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:45:53,742 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[378560,378573] [2021-12-15 11:45:53,749 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[383339,383352] [2021-12-15 11:45:53,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:45:53,805 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:45:53,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:53 WrapperNode [2021-12-15 11:45:53,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:45:53,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:45:53,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:45:53,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:45:53,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:53" (1/1) ... [2021-12-15 11:45:53,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:53" (1/1) ... [2021-12-15 11:45:54,199 INFO L137 Inliner]: procedures = 46, calls = 45, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 12566 [2021-12-15 11:45:54,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:45:54,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:45:54,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:45:54,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:45:54,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:53" (1/1) ... [2021-12-15 11:45:54,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:53" (1/1) ... [2021-12-15 11:45:54,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:53" (1/1) ... [2021-12-15 11:45:54,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:53" (1/1) ... [2021-12-15 11:45:54,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:53" (1/1) ... [2021-12-15 11:45:54,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:53" (1/1) ... [2021-12-15 11:45:54,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:53" (1/1) ... [2021-12-15 11:45:54,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:45:54,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:45:54,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:45:54,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:45:54,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:53" (1/1) ... [2021-12-15 11:45:54,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:45:54,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:45:54,889 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 11:45:54,913 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 11:45:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:45:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-15 11:45:54,928 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-15 11:45:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:45:54,928 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:45:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:45:54,928 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:45:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:45:54,929 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:45:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:45:54,929 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:45:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:45:54,929 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:45:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:45:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:45:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:45:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:45:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:45:55,061 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:45:55,069 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:46:00,807 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:46:00,831 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:46:00,831 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-15 11:46:00,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:46:00 BoogieIcfgContainer [2021-12-15 11:46:00,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:46:00,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:46:00,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:46:00,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:46:00,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:45:51" (1/3) ... [2021-12-15 11:46:00,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7918b9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:46:00, skipping insertion in model container [2021-12-15 11:46:00,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:53" (2/3) ... [2021-12-15 11:46:00,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7918b9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:46:00, skipping insertion in model container [2021-12-15 11:46:00,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:46:00" (3/3) ... [2021-12-15 11:46:00,843 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.01.cil-2.c [2021-12-15 11:46:00,848 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:46:00,848 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:46:00,911 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:46:00,916 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:46:00,917 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:46:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 2298 states, 2271 states have (on average 1.8590929106120653) internal successors, (4222), 2276 states have internal predecessors, (4222), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-15 11:46:01,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-15 11:46:01,052 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:46:01,053 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] [2021-12-15 11:46:01,054 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:46:01,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:46:01,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1417964819, now seen corresponding path program 1 times [2021-12-15 11:46:01,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:46:01,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298180045] [2021-12-15 11:46:01,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:46:01,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:46:01,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:46:01,117 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:46:01,122 INFO L158 Benchmark]: Toolchain (without parser) took 10022.10ms. Allocated memory was 94.4MB in the beginning and 824.2MB in the end (delta: 729.8MB). Free memory was 48.7MB in the beginning and 635.0MB in the end (delta: -586.4MB). Peak memory consumption was 141.7MB. Max. memory is 16.1GB. [2021-12-15 11:46:01,122 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 94.4MB. Free memory is still 50.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:46:01,123 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2706.89ms. Allocated memory was 94.4MB in the beginning and 176.2MB in the end (delta: 81.8MB). Free memory was 48.3MB in the beginning and 65.9MB in the end (delta: -17.6MB). Peak memory consumption was 85.0MB. Max. memory is 16.1GB. [2021-12-15 11:46:01,123 INFO L158 Benchmark]: Boogie Procedure Inliner took 393.00ms. Allocated memory was 176.2MB in the beginning and 251.7MB in the end (delta: 75.5MB). Free memory was 65.9MB in the beginning and 97.8MB in the end (delta: -32.0MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. [2021-12-15 11:46:01,124 INFO L158 Benchmark]: Boogie Preprocessor took 643.93ms. Allocated memory is still 251.7MB. Free memory was 97.8MB in the beginning and 104.5MB in the end (delta: -6.6MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. [2021-12-15 11:46:01,125 INFO L158 Benchmark]: RCFGBuilder took 5990.60ms. Allocated memory was 251.7MB in the beginning and 824.2MB in the end (delta: 572.5MB). Free memory was 104.5MB in the beginning and 342.7MB in the end (delta: -238.2MB). Peak memory consumption was 334.2MB. Max. memory is 16.1GB. [2021-12-15 11:46:01,125 INFO L158 Benchmark]: TraceAbstraction took 282.64ms. Allocated memory is still 824.2MB. Free memory was 341.6MB in the beginning and 635.0MB in the end (delta: -293.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:46:01,128 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 94.4MB. Free memory is still 50.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2706.89ms. Allocated memory was 94.4MB in the beginning and 176.2MB in the end (delta: 81.8MB). Free memory was 48.3MB in the beginning and 65.9MB in the end (delta: -17.6MB). Peak memory consumption was 85.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 393.00ms. Allocated memory was 176.2MB in the beginning and 251.7MB in the end (delta: 75.5MB). Free memory was 65.9MB in the beginning and 97.8MB in the end (delta: -32.0MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 643.93ms. Allocated memory is still 251.7MB. Free memory was 97.8MB in the beginning and 104.5MB in the end (delta: -6.6MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. * RCFGBuilder took 5990.60ms. Allocated memory was 251.7MB in the beginning and 824.2MB in the end (delta: 572.5MB). Free memory was 104.5MB in the beginning and 342.7MB in the end (delta: -238.2MB). Peak memory consumption was 334.2MB. Max. memory is 16.1GB. * TraceAbstraction took 282.64ms. Allocated memory is still 824.2MB. Free memory was 341.6MB in the beginning and 635.0MB in the end (delta: -293.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:46:01,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.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 cfaa727818e9d1eb335a3637dac175808db4c2bbb7c5a7c3c9835dd5611700d7 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:46:03,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:46:03,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:46:03,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:46:03,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:46:03,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:46:03,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:46:03,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:46:03,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:46:03,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:46:03,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:46:03,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:46:03,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:46:03,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:46:03,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:46:03,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:46:03,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:46:03,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:46:03,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:46:03,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:46:03,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:46:03,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:46:03,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:46:03,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:46:03,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:46:03,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:46:03,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:46:03,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:46:03,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:46:03,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:46:03,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:46:03,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:46:03,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:46:03,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:46:03,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:46:03,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:46:03,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:46:03,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:46:03,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:46:03,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:46:03,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:46:03,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:46:03,212 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:46:03,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:46:03,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:46:03,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:46:03,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:46:03,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:46:03,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:46:03,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:46:03,215 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:46:03,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:46:03,215 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:46:03,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:46:03,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:46:03,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:46:03,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:46:03,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:46:03,216 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:46:03,217 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:46:03,217 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:46:03,217 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:46:03,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:46:03,217 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:46:03,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:46:03,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:46:03,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:46:03,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:46:03,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:46:03,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:46:03,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:46:03,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:46:03,219 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:46:03,220 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:46:03,220 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:46:03,220 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:46:03,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:46:03,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:46:03,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:46:03,221 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfaa727818e9d1eb335a3637dac175808db4c2bbb7c5a7c3c9835dd5611700d7 [2021-12-15 11:46:03,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:46:03,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:46:03,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:46:03,533 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:46:03,534 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:46:03,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c [2021-12-15 11:46:03,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fa855b85/778e220306ff4e489bec5fe722a7e9b3/FLAG0006cd5e4 [2021-12-15 11:46:04,485 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:46:04,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c [2021-12-15 11:46:04,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fa855b85/778e220306ff4e489bec5fe722a7e9b3/FLAG0006cd5e4 [2021-12-15 11:46:04,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fa855b85/778e220306ff4e489bec5fe722a7e9b3 [2021-12-15 11:46:04,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:46:04,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:46:04,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:46:04,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:46:04,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:46:04,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:04" (1/1) ... [2021-12-15 11:46:04,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5171d424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:04, skipping insertion in model container [2021-12-15 11:46:04,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:04" (1/1) ... [2021-12-15 11:46:04,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:46:05,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:46:06,702 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[378560,378573] [2021-12-15 11:46:06,740 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[383339,383352] [2021-12-15 11:46:06,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:46:06,881 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:46:07,828 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[378560,378573] [2021-12-15 11:46:07,836 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[383339,383352] [2021-12-15 11:46:07,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:46:07,912 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:46:07,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:07 WrapperNode [2021-12-15 11:46:07,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:46:07,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:46:07,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:46:07,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:46:07,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:07" (1/1) ... [2021-12-15 11:46:08,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:07" (1/1) ... [2021-12-15 11:46:08,386 INFO L137 Inliner]: procedures = 47, calls = 45, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 12545 [2021-12-15 11:46:08,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:46:08,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:46:08,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:46:08,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:46:08,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:07" (1/1) ... [2021-12-15 11:46:08,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:07" (1/1) ... [2021-12-15 11:46:08,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:07" (1/1) ... [2021-12-15 11:46:08,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:07" (1/1) ... [2021-12-15 11:46:08,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:07" (1/1) ... [2021-12-15 11:46:08,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:07" (1/1) ... [2021-12-15 11:46:08,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:07" (1/1) ... [2021-12-15 11:46:08,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:46:08,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:46:08,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:46:08,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:46:08,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:07" (1/1) ... [2021-12-15 11:46:08,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:46:08,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:46:08,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:46:09,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:46:09,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:46:09,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:46:09,052 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-15 11:46:09,053 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-15 11:46:09,053 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:46:09,053 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:46:09,053 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:46:09,053 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:46:09,053 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:46:09,054 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:46:09,054 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:46:09,054 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:46:09,054 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:46:09,054 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:46:09,054 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:46:09,054 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:46:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:46:09,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:46:09,167 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:46:09,173 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:46:16,913 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:46:16,947 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:46:16,947 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-15 11:46:16,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:46:16 BoogieIcfgContainer [2021-12-15 11:46:16,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:46:16,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:46:16,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:46:16,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:46:16,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:46:04" (1/3) ... [2021-12-15 11:46:16,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c554188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:46:16, skipping insertion in model container [2021-12-15 11:46:16,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:07" (2/3) ... [2021-12-15 11:46:16,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c554188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:46:16, skipping insertion in model container [2021-12-15 11:46:16,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:46:16" (3/3) ... [2021-12-15 11:46:16,958 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.01.cil-2.c [2021-12-15 11:46:16,962 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:46:16,963 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:46:17,109 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:46:17,117 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:46:17,117 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:46:17,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 2298 states, 2271 states have (on average 1.8590929106120653) internal successors, (4222), 2276 states have internal predecessors, (4222), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-15 11:46:17,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-15 11:46:17,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:46:17,199 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] [2021-12-15 11:46:17,199 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:46:17,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:46:17,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1417964819, now seen corresponding path program 1 times [2021-12-15 11:46:17,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:46:17,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475758803] [2021-12-15 11:46:17,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:46:17,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:46:17,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:46:17,221 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 11:46:17,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 11:46:17,280 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 11:46:17,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 11:46:17,476 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:46:17,480 INFO L158 Benchmark]: Toolchain (without parser) took 12510.79ms. Allocated memory was 81.8MB in the beginning and 893.4MB in the end (delta: 811.6MB). Free memory was 42.3MB in the beginning and 699.7MB in the end (delta: -657.4MB). Peak memory consumption was 152.9MB. Max. memory is 16.1GB. [2021-12-15 11:46:17,480 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.9MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:46:17,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2943.91ms. Allocated memory was 81.8MB in the beginning and 218.1MB in the end (delta: 136.3MB). Free memory was 42.1MB in the beginning and 101.7MB in the end (delta: -59.6MB). Peak memory consumption was 92.4MB. Max. memory is 16.1GB. [2021-12-15 11:46:17,482 INFO L158 Benchmark]: Boogie Procedure Inliner took 472.97ms. Allocated memory is still 218.1MB. Free memory was 101.7MB in the beginning and 89.9MB in the end (delta: 11.8MB). Peak memory consumption was 67.8MB. Max. memory is 16.1GB. [2021-12-15 11:46:17,483 INFO L158 Benchmark]: Boogie Preprocessor took 519.18ms. Allocated memory was 218.1MB in the beginning and 446.7MB in the end (delta: 228.6MB). Free memory was 89.9MB in the beginning and 288.7MB in the end (delta: -198.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2021-12-15 11:46:17,485 INFO L158 Benchmark]: RCFGBuilder took 8043.17ms. Allocated memory was 446.7MB in the beginning and 893.4MB in the end (delta: 446.7MB). Free memory was 288.7MB in the beginning and 331.9MB in the end (delta: -43.3MB). Peak memory consumption was 404.8MB. Max. memory is 16.1GB. [2021-12-15 11:46:17,486 INFO L158 Benchmark]: TraceAbstraction took 525.63ms. Allocated memory is still 893.4MB. Free memory was 330.9MB in the beginning and 699.7MB in the end (delta: -368.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:46:17,488 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.9MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2943.91ms. Allocated memory was 81.8MB in the beginning and 218.1MB in the end (delta: 136.3MB). Free memory was 42.1MB in the beginning and 101.7MB in the end (delta: -59.6MB). Peak memory consumption was 92.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 472.97ms. Allocated memory is still 218.1MB. Free memory was 101.7MB in the beginning and 89.9MB in the end (delta: 11.8MB). Peak memory consumption was 67.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 519.18ms. Allocated memory was 218.1MB in the beginning and 446.7MB in the end (delta: 228.6MB). Free memory was 89.9MB in the beginning and 288.7MB in the end (delta: -198.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * RCFGBuilder took 8043.17ms. Allocated memory was 446.7MB in the beginning and 893.4MB in the end (delta: 446.7MB). Free memory was 288.7MB in the beginning and 331.9MB in the end (delta: -43.3MB). Peak memory consumption was 404.8MB. Max. memory is 16.1GB. * TraceAbstraction took 525.63ms. Allocated memory is still 893.4MB. Free memory was 330.9MB in the beginning and 699.7MB in the end (delta: -368.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:46:17,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable