./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e00c3fe8d0c18f678a1828bfe849f51bd28f58902f8fb74e3907dba377893684 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:46:55,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:46:55,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:46:55,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:46:55,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:46:55,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:46:55,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:46:55,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:46:55,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:46:55,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:46:55,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:46:55,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:46:55,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:46:55,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:46:55,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:46:55,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:46:55,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:46:55,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:46:55,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:46:55,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:46:55,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:46:55,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:46:55,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:46:55,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:46:55,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:46:55,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:46:55,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:46:55,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:46:55,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:46:55,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:46:55,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:46:55,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:46:55,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:46:55,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:46:55,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:46:55,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:46:55,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:46:55,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:46:55,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:46:55,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:46:55,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:46:55,807 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:46:55,826 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:46:55,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:46:55,827 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:46:55,827 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:46:55,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:46:55,828 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:46:55,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:46:55,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:46:55,829 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:46:55,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:46:55,829 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:46:55,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:46:55,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:46:55,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:46:55,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:46:55,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:46:55,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:46:55,830 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:46:55,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:46:55,831 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:46:55,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:46:55,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:46:55,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:46:55,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:46:55,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:46:55,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:46:55,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:46:55,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:46:55,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:46:55,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:46:55,832 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:46:55,832 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:46:55,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:46:55,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:46:55,833 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e00c3fe8d0c18f678a1828bfe849f51bd28f58902f8fb74e3907dba377893684 [2021-12-15 11:46:56,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:46:56,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:46:56,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:46:56,044 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:46:56,045 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:46:56,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c [2021-12-15 11:46:56,096 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b493e7536/b3e566edc41b4980831afe4eb7e26787/FLAGd7f598cba [2021-12-15 11:46:56,805 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:46:56,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c [2021-12-15 11:46:56,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b493e7536/b3e566edc41b4980831afe4eb7e26787/FLAGd7f598cba [2021-12-15 11:46:57,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b493e7536/b3e566edc41b4980831afe4eb7e26787 [2021-12-15 11:46:57,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:46:57,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:46:57,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:46:57,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:46:57,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:46:57,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:57" (1/1) ... [2021-12-15 11:46:57,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f5710f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:57, skipping insertion in model container [2021-12-15 11:46:57,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:57" (1/1) ... [2021-12-15 11:46:57,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:46:57,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:46:58,522 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c[381679,381692] [2021-12-15 11:46:58,540 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c[383339,383352] [2021-12-15 11:46:58,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:46:58,679 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:46:59,235 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c[381679,381692] [2021-12-15 11:46:59,252 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c[383339,383352] [2021-12-15 11:46:59,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:46:59,314 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:46:59,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:59 WrapperNode [2021-12-15 11:46:59,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:46:59,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:46:59,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:46:59,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:46:59,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:59" (1/1) ... [2021-12-15 11:46:59,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:59" (1/1) ... [2021-12-15 11:46:59,708 INFO L137 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12735 [2021-12-15 11:46:59,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:46:59,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:46:59,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:46:59,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:46:59,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:59" (1/1) ... [2021-12-15 11:46:59,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:59" (1/1) ... [2021-12-15 11:46:59,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:59" (1/1) ... [2021-12-15 11:46:59,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:59" (1/1) ... [2021-12-15 11:46:59,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:59" (1/1) ... [2021-12-15 11:46:59,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:59" (1/1) ... [2021-12-15 11:46:59,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:59" (1/1) ... [2021-12-15 11:47:00,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:47:00,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:47:00,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:47:00,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:47:00,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:59" (1/1) ... [2021-12-15 11:47:00,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:47:00,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:47:00,039 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:47:00,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:47:00,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:47:00,078 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:47:00,078 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:47:00,078 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:47:00,078 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:47:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:47:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:47:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:47:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:47:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:47:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:47:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:47:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:47:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:47:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:47:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:47:00,148 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:47:00,150 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:47:04,905 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:47:04,927 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:47:04,928 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-15 11:47:04,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:04 BoogieIcfgContainer [2021-12-15 11:47:04,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:47:04,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:47:04,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:47:04,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:47:04,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:46:57" (1/3) ... [2021-12-15 11:47:04,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2d7d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:04, skipping insertion in model container [2021-12-15 11:47:04,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:59" (2/3) ... [2021-12-15 11:47:04,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2d7d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:04, skipping insertion in model container [2021-12-15 11:47:04,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:04" (3/3) ... [2021-12-15 11:47:04,938 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.04.cil-1.c [2021-12-15 11:47:04,942 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:47:04,942 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:47:04,982 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:47:04,986 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:47:04,987 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:47:05,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-15 11:47:05,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-15 11:47:05,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:47:05,031 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] [2021-12-15 11:47:05,032 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:47:05,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:47:05,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1353629608, now seen corresponding path program 1 times [2021-12-15 11:47:05,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:47:05,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570053954] [2021-12-15 11:47:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:47:05,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:47:05,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:47:05,085 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:47:05,093 INFO L158 Benchmark]: Toolchain (without parser) took 7969.95ms. Allocated memory was 123.7MB in the beginning and 1.1GB in the end (delta: 931.1MB). Free memory was 83.1MB in the beginning and 681.1MB in the end (delta: -598.0MB). Peak memory consumption was 332.7MB. Max. memory is 16.1GB. [2021-12-15 11:47:05,094 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 41.5MB in the beginning and 41.4MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:47:05,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2192.57ms. Allocated memory was 123.7MB in the beginning and 302.0MB in the end (delta: 178.3MB). Free memory was 83.1MB in the beginning and 203.7MB in the end (delta: -120.6MB). Peak memory consumption was 110.7MB. Max. memory is 16.1GB. [2021-12-15 11:47:05,095 INFO L158 Benchmark]: Boogie Procedure Inliner took 392.53ms. Allocated memory is still 302.0MB. Free memory was 203.7MB in the beginning and 171.2MB in the end (delta: 32.5MB). Peak memory consumption was 113.2MB. Max. memory is 16.1GB. [2021-12-15 11:47:05,095 INFO L158 Benchmark]: Boogie Preprocessor took 306.99ms. Allocated memory is still 302.0MB. Free memory was 171.2MB in the beginning and 124.1MB in the end (delta: 47.2MB). Peak memory consumption was 53.5MB. Max. memory is 16.1GB. [2021-12-15 11:47:05,096 INFO L158 Benchmark]: RCFGBuilder took 4915.31ms. Allocated memory was 302.0MB in the beginning and 1.1GB in the end (delta: 752.9MB). Free memory was 124.1MB in the beginning and 702.1MB in the end (delta: -578.0MB). Peak memory consumption was 239.8MB. Max. memory is 16.1GB. [2021-12-15 11:47:05,096 INFO L158 Benchmark]: TraceAbstraction took 158.42ms. Allocated memory is still 1.1GB. Free memory was 702.1MB in the beginning and 681.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-15 11:47:05,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 41.5MB in the beginning and 41.4MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2192.57ms. Allocated memory was 123.7MB in the beginning and 302.0MB in the end (delta: 178.3MB). Free memory was 83.1MB in the beginning and 203.7MB in the end (delta: -120.6MB). Peak memory consumption was 110.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 392.53ms. Allocated memory is still 302.0MB. Free memory was 203.7MB in the beginning and 171.2MB in the end (delta: 32.5MB). Peak memory consumption was 113.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 306.99ms. Allocated memory is still 302.0MB. Free memory was 171.2MB in the beginning and 124.1MB in the end (delta: 47.2MB). Peak memory consumption was 53.5MB. Max. memory is 16.1GB. * RCFGBuilder took 4915.31ms. Allocated memory was 302.0MB in the beginning and 1.1GB in the end (delta: 752.9MB). Free memory was 124.1MB in the beginning and 702.1MB in the end (delta: -578.0MB). Peak memory consumption was 239.8MB. Max. memory is 16.1GB. * TraceAbstraction took 158.42ms. Allocated memory is still 1.1GB. Free memory was 702.1MB in the beginning and 681.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:47:05,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e00c3fe8d0c18f678a1828bfe849f51bd28f58902f8fb74e3907dba377893684 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:47:06,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:47:06,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:47:06,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:47:06,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:47:06,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:47:06,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:47:06,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:47:06,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:47:06,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:47:06,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:47:06,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:47:06,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:47:06,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:47:06,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:47:06,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:47:06,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:47:06,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:47:06,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:47:06,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:47:06,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:47:06,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:47:06,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:47:06,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:47:06,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:47:06,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:47:06,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:47:06,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:47:06,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:47:06,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:47:06,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:47:06,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:47:06,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:47:06,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:47:06,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:47:06,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:47:06,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:47:06,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:47:06,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:47:06,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:47:06,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:47:06,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:47:06,946 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:47:06,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:47:06,947 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:47:06,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:47:06,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:47:06,949 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:47:06,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:47:06,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:47:06,950 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:47:06,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:47:06,950 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:47:06,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:47:06,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:47:06,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:47:06,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:47:06,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:47:06,951 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:47:06,951 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:47:06,952 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:47:06,952 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:47:06,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:47:06,952 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:47:06,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:47:06,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:47:06,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:47:06,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:47:06,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:47:06,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:47:06,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:47:06,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:47:06,961 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:47:06,961 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:47:06,961 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:47:06,961 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:47:06,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:47:06,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:47:06,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:47:06,962 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e00c3fe8d0c18f678a1828bfe849f51bd28f58902f8fb74e3907dba377893684 [2021-12-15 11:47:07,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:47:07,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:47:07,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:47:07,222 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:47:07,223 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:47:07,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c [2021-12-15 11:47:07,276 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/904bf9e2f/2de5acd0959e470f9d32bbaefeae776a/FLAG2528b66c5 [2021-12-15 11:47:08,029 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:47:08,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c [2021-12-15 11:47:08,074 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/904bf9e2f/2de5acd0959e470f9d32bbaefeae776a/FLAG2528b66c5 [2021-12-15 11:47:08,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/904bf9e2f/2de5acd0959e470f9d32bbaefeae776a [2021-12-15 11:47:08,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:47:08,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:47:08,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:47:08,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:47:08,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:47:08,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:47:08" (1/1) ... [2021-12-15 11:47:08,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa51731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:08, skipping insertion in model container [2021-12-15 11:47:08,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:47:08" (1/1) ... [2021-12-15 11:47:08,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:47:08,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:47:09,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c[381679,381692] [2021-12-15 11:47:09,688 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c[383339,383352] [2021-12-15 11:47:09,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:47:09,827 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:47:10,413 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c[381679,381692] [2021-12-15 11:47:10,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c[383339,383352] [2021-12-15 11:47:10,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:47:10,474 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:47:10,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:10 WrapperNode [2021-12-15 11:47:10,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:47:10,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:47:10,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:47:10,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:47:10,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:10" (1/1) ... [2021-12-15 11:47:10,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:10" (1/1) ... [2021-12-15 11:47:10,902 INFO L137 Inliner]: procedures = 53, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12709 [2021-12-15 11:47:10,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:47:10,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:47:10,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:47:10,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:47:10,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:10" (1/1) ... [2021-12-15 11:47:10,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:10" (1/1) ... [2021-12-15 11:47:11,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:10" (1/1) ... [2021-12-15 11:47:11,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:10" (1/1) ... [2021-12-15 11:47:11,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:10" (1/1) ... [2021-12-15 11:47:11,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:10" (1/1) ... [2021-12-15 11:47:11,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:10" (1/1) ... [2021-12-15 11:47:11,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:47:11,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:47:11,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:47:11,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:47:11,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:10" (1/1) ... [2021-12-15 11:47:11,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:47:11,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:47:11,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:47:11,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:47:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:47:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:47:11,504 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:47:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:47:11,504 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:47:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:47:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:47:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:47:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:47:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:47:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:47:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:47:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:47:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:47:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:47:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:47:11,658 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:47:11,660 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:47:17,933 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:47:17,952 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:47:17,952 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-15 11:47:17,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:17 BoogieIcfgContainer [2021-12-15 11:47:17,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:47:17,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:47:17,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:47:17,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:47:17,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:47:08" (1/3) ... [2021-12-15 11:47:17,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a77d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:17, skipping insertion in model container [2021-12-15 11:47:17,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:10" (2/3) ... [2021-12-15 11:47:17,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a77d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:17, skipping insertion in model container [2021-12-15 11:47:17,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:17" (3/3) ... [2021-12-15 11:47:17,962 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.04.cil-1.c [2021-12-15 11:47:17,966 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:47:17,966 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:47:18,016 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:47:18,021 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:47:18,021 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:47:18,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-15 11:47:18,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-15 11:47:18,084 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:47:18,085 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] [2021-12-15 11:47:18,085 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:47:18,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:47:18,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1353629608, now seen corresponding path program 1 times [2021-12-15 11:47:18,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:47:18,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440770917] [2021-12-15 11:47:18,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:47:18,102 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:47:18,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:47:18,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 11:47:18,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 11:47:18,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 11:47:18,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 11:47:18,354 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:47:18,358 INFO L158 Benchmark]: Toolchain (without parser) took 10045.82ms. Allocated memory was 69.2MB in the beginning and 713.0MB in the end (delta: 643.8MB). Free memory was 32.3MB in the beginning and 174.4MB in the end (delta: -142.1MB). Peak memory consumption was 499.5MB. Max. memory is 16.1GB. [2021-12-15 11:47:18,359 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 69.2MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:47:18,359 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2162.77ms. Allocated memory was 69.2MB in the beginning and 190.8MB in the end (delta: 121.6MB). Free memory was 32.2MB in the beginning and 89.0MB in the end (delta: -56.8MB). Peak memory consumption was 98.5MB. Max. memory is 16.1GB. [2021-12-15 11:47:18,359 INFO L158 Benchmark]: Boogie Procedure Inliner took 427.76ms. Allocated memory was 190.8MB in the beginning and 356.5MB in the end (delta: 165.7MB). Free memory was 89.0MB in the beginning and 225.8MB in the end (delta: -136.8MB). Peak memory consumption was 72.8MB. Max. memory is 16.1GB. [2021-12-15 11:47:18,360 INFO L158 Benchmark]: Boogie Preprocessor took 476.72ms. Allocated memory is still 356.5MB. Free memory was 225.8MB in the beginning and 179.6MB in the end (delta: 46.1MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2021-12-15 11:47:18,360 INFO L158 Benchmark]: RCFGBuilder took 6575.35ms. Allocated memory was 356.5MB in the beginning and 713.0MB in the end (delta: 356.5MB). Free memory was 179.6MB in the beginning and 199.5MB in the end (delta: -19.9MB). Peak memory consumption was 386.9MB. Max. memory is 16.1GB. [2021-12-15 11:47:18,361 INFO L158 Benchmark]: TraceAbstraction took 398.97ms. Allocated memory is still 713.0MB. Free memory was 198.5MB in the beginning and 174.4MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-15 11:47:18,363 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 69.2MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2162.77ms. Allocated memory was 69.2MB in the beginning and 190.8MB in the end (delta: 121.6MB). Free memory was 32.2MB in the beginning and 89.0MB in the end (delta: -56.8MB). Peak memory consumption was 98.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 427.76ms. Allocated memory was 190.8MB in the beginning and 356.5MB in the end (delta: 165.7MB). Free memory was 89.0MB in the beginning and 225.8MB in the end (delta: -136.8MB). Peak memory consumption was 72.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 476.72ms. Allocated memory is still 356.5MB. Free memory was 225.8MB in the beginning and 179.6MB in the end (delta: 46.1MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * RCFGBuilder took 6575.35ms. Allocated memory was 356.5MB in the beginning and 713.0MB in the end (delta: 356.5MB). Free memory was 179.6MB in the beginning and 199.5MB in the end (delta: -19.9MB). Peak memory consumption was 386.9MB. Max. memory is 16.1GB. * TraceAbstraction took 398.97ms. Allocated memory is still 713.0MB. Free memory was 198.5MB in the beginning and 174.4MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:47:18,389 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