./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.11.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_label46+token_ring.11.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 c748b455b85e8e0d3f42bb7ec9994b8706853b8413212fc1d08f459460f9e58b --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:49:44,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:49:44,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:49:44,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:49:44,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:49:44,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:49:44,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:49:44,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:49:44,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:49:44,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:49:44,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:49:44,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:49:44,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:49:44,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:49:44,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:49:44,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:49:44,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:49:44,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:49:44,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:49:44,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:49:44,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:49:44,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:49:44,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:49:44,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:49:44,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:49:44,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:49:44,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:49:44,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:49:44,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:49:44,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:49:44,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:49:44,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:49:44,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:49:44,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:49:44,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:49:44,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:49:44,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:49:44,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:49:44,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:49:44,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:49:44,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:49:44,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:49:44,880 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:49:44,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:49:44,881 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:49:44,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:49:44,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:49:44,882 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:49:44,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:49:44,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:49:44,883 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:49:44,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:49:44,884 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:49:44,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:49:44,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:49:44,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:49:44,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:49:44,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:49:44,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:49:44,885 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:49:44,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:49:44,885 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:49:44,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:49:44,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:49:44,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:49:44,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:49:44,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:49:44,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:49:44,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:49:44,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:49:44,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:49:44,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:49:44,887 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:49:44,888 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:49:44,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:49:44,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:49:44,888 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c748b455b85e8e0d3f42bb7ec9994b8706853b8413212fc1d08f459460f9e58b [2021-12-15 11:49:45,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:49:45,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:49:45,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:49:45,064 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:49:45,065 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:49:45,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.11.cil-2.c [2021-12-15 11:49:45,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa76fa88b/a467afff296345319d1b121cd3a40cb8/FLAG2988ca364 [2021-12-15 11:49:45,817 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:49:45,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.11.cil-2.c [2021-12-15 11:49:45,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa76fa88b/a467afff296345319d1b121cd3a40cb8/FLAG2988ca364 [2021-12-15 11:49:46,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa76fa88b/a467afff296345319d1b121cd3a40cb8 [2021-12-15 11:49:46,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:49:46,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:49:46,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:49:46,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:49:46,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:49:46,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:49:46" (1/1) ... [2021-12-15 11:49:46,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fa8794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:46, skipping insertion in model container [2021-12-15 11:49:46,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:49:46" (1/1) ... [2021-12-15 11:49:46,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:49:46,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:49:47,429 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_label46+token_ring.11.cil-2.c[382357,382370] [2021-12-15 11:49:47,448 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_label46+token_ring.11.cil-2.c[383339,383352] [2021-12-15 11:49:47,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:49:47,675 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:49:48,224 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_label46+token_ring.11.cil-2.c[382357,382370] [2021-12-15 11:49:48,234 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_label46+token_ring.11.cil-2.c[383339,383352] [2021-12-15 11:49:48,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:49:48,318 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:49:48,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:48 WrapperNode [2021-12-15 11:49:48,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:49:48,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:49:48,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:49:48,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:49:48,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:48" (1/1) ... [2021-12-15 11:49:48,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:48" (1/1) ... [2021-12-15 11:49:48,648 INFO L137 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13141 [2021-12-15 11:49:48,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:49:48,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:49:48,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:49:48,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:49:48,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:48" (1/1) ... [2021-12-15 11:49:48,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:48" (1/1) ... [2021-12-15 11:49:48,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:48" (1/1) ... [2021-12-15 11:49:48,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:48" (1/1) ... [2021-12-15 11:49:48,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:48" (1/1) ... [2021-12-15 11:49:48,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:48" (1/1) ... [2021-12-15 11:49:48,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:48" (1/1) ... [2021-12-15 11:49:48,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:49:48,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:49:48,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:49:48,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:49:48,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:48" (1/1) ... [2021-12-15 11:49:48,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:49:48,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:49:48,983 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 11:49:48,999 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 11:49:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:49:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:49:49,009 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:49:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:49:49,010 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:49:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:49:49,010 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:49:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:49:49,010 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:49:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:49:49,010 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:49:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:49:49,011 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:49:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:49:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:49:49,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:49:49,147 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:49:49,152 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:49:54,082 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:49:54,100 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:49:54,101 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-12-15 11:49:54,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:49:54 BoogieIcfgContainer [2021-12-15 11:49:54,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:49:54,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:49:54,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:49:54,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:49:54,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:49:46" (1/3) ... [2021-12-15 11:49:54,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d341e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:49:54, skipping insertion in model container [2021-12-15 11:49:54,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:48" (2/3) ... [2021-12-15 11:49:54,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d341e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:49:54, skipping insertion in model container [2021-12-15 11:49:54,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:49:54" (3/3) ... [2021-12-15 11:49:54,110 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.11.cil-2.c [2021-12-15 11:49:54,113 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:49:54,113 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:49:54,150 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:49:54,155 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 11:49:54,155 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:49:54,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-15 11:49:54,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-15 11:49:54,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:49:54,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:49:54,204 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:49:54,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:49:54,208 INFO L85 PathProgramCache]: Analyzing trace with hash -17558896, now seen corresponding path program 1 times [2021-12-15 11:49:54,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:49:54,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380331707] [2021-12-15 11:49:54,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:49:54,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:49:54,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:49:54,253 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 11:49:54,257 INFO L158 Benchmark]: Toolchain (without parser) took 8113.19ms. Allocated memory was 130.0MB in the beginning and 926.9MB in the end (delta: 796.9MB). Free memory was 92.8MB in the beginning and 640.0MB in the end (delta: -547.2MB). Peak memory consumption was 250.2MB. Max. memory is 16.1GB. [2021-12-15 11:49:54,257 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory was 42.0MB in the beginning and 41.9MB in the end (delta: 40.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:49:54,258 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2174.63ms. Allocated memory was 130.0MB in the beginning and 209.7MB in the end (delta: 79.7MB). Free memory was 92.8MB in the beginning and 110.4MB in the end (delta: -17.6MB). Peak memory consumption was 118.1MB. Max. memory is 16.1GB. [2021-12-15 11:49:54,259 INFO L158 Benchmark]: Boogie Procedure Inliner took 328.55ms. Allocated memory was 209.7MB in the beginning and 299.9MB in the end (delta: 90.2MB). Free memory was 110.4MB in the beginning and 158.6MB in the end (delta: -48.2MB). Peak memory consumption was 78.6MB. Max. memory is 16.1GB. [2021-12-15 11:49:54,259 INFO L158 Benchmark]: Boogie Preprocessor took 309.38ms. Allocated memory is still 299.9MB. Free memory was 158.6MB in the beginning and 114.6MB in the end (delta: 44.0MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2021-12-15 11:49:54,259 INFO L158 Benchmark]: RCFGBuilder took 5145.38ms. Allocated memory was 299.9MB in the beginning and 926.9MB in the end (delta: 627.0MB). Free memory was 114.6MB in the beginning and 662.0MB in the end (delta: -547.4MB). Peak memory consumption was 259.9MB. Max. memory is 16.1GB. [2021-12-15 11:49:54,260 INFO L158 Benchmark]: TraceAbstraction took 150.42ms. Allocated memory is still 926.9MB. Free memory was 662.0MB in the beginning and 640.0MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-15 11:49:54,262 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory was 42.0MB in the beginning and 41.9MB in the end (delta: 40.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2174.63ms. Allocated memory was 130.0MB in the beginning and 209.7MB in the end (delta: 79.7MB). Free memory was 92.8MB in the beginning and 110.4MB in the end (delta: -17.6MB). Peak memory consumption was 118.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 328.55ms. Allocated memory was 209.7MB in the beginning and 299.9MB in the end (delta: 90.2MB). Free memory was 110.4MB in the beginning and 158.6MB in the end (delta: -48.2MB). Peak memory consumption was 78.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 309.38ms. Allocated memory is still 299.9MB. Free memory was 158.6MB in the beginning and 114.6MB in the end (delta: 44.0MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * RCFGBuilder took 5145.38ms. Allocated memory was 299.9MB in the beginning and 926.9MB in the end (delta: 627.0MB). Free memory was 114.6MB in the beginning and 662.0MB in the end (delta: -547.4MB). Peak memory consumption was 259.9MB. Max. memory is 16.1GB. * TraceAbstraction took 150.42ms. Allocated memory is still 926.9MB. Free memory was 662.0MB in the beginning and 640.0MB in the end (delta: 22.0MB). 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 11:49:54,289 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_label46+token_ring.11.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 c748b455b85e8e0d3f42bb7ec9994b8706853b8413212fc1d08f459460f9e58b --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:49:55,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:49:55,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:49:56,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:49:56,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:49:56,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:49:56,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:49:56,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:49:56,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:49:56,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:49:56,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:49:56,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:49:56,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:49:56,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:49:56,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:49:56,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:49:56,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:49:56,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:49:56,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:49:56,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:49:56,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:49:56,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:49:56,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:49:56,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:49:56,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:49:56,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:49:56,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:49:56,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:49:56,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:49:56,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:49:56,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:49:56,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:49:56,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:49:56,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:49:56,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:49:56,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:49:56,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:49:56,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:49:56,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:49:56,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:49:56,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:49:56,079 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:49:56,102 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:49:56,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:49:56,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:49:56,104 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:49:56,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:49:56,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:49:56,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:49:56,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:49:56,106 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:49:56,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:49:56,106 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:49:56,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:49:56,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:49:56,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:49:56,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:49:56,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:49:56,107 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:49:56,107 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:49:56,107 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:49:56,108 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:49:56,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:49:56,108 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:49:56,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:49:56,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:49:56,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:49:56,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:49:56,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:49:56,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:49:56,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:49:56,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:49:56,116 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:49:56,116 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:49:56,116 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:49:56,116 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:49:56,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:49:56,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:49:56,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:49:56,117 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c748b455b85e8e0d3f42bb7ec9994b8706853b8413212fc1d08f459460f9e58b [2021-12-15 11:49:56,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:49:56,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:49:56,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:49:56,376 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:49:56,377 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:49:56,378 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.11.cil-2.c [2021-12-15 11:49:56,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1aebf181/02c2719736d44ffbad349489220c8560/FLAGec65b69d6 [2021-12-15 11:49:57,104 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:49:57,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.11.cil-2.c [2021-12-15 11:49:57,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1aebf181/02c2719736d44ffbad349489220c8560/FLAGec65b69d6 [2021-12-15 11:49:57,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1aebf181/02c2719736d44ffbad349489220c8560 [2021-12-15 11:49:57,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:49:57,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:49:57,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:49:57,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:49:57,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:49:57,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:49:57" (1/1) ... [2021-12-15 11:49:57,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f94fe37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:57, skipping insertion in model container [2021-12-15 11:49:57,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:49:57" (1/1) ... [2021-12-15 11:49:57,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:49:57,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:49:58,526 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_label46+token_ring.11.cil-2.c[382357,382370] [2021-12-15 11:49:58,545 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_label46+token_ring.11.cil-2.c[383339,383352] [2021-12-15 11:49:58,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:49:58,743 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:49:59,447 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_label46+token_ring.11.cil-2.c[382357,382370] [2021-12-15 11:49:59,452 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_label46+token_ring.11.cil-2.c[383339,383352] [2021-12-15 11:49:59,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:49:59,519 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:49:59,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:59 WrapperNode [2021-12-15 11:49:59,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:49:59,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:49:59,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:49:59,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:49:59,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:59" (1/1) ... [2021-12-15 11:49:59,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:59" (1/1) ... [2021-12-15 11:50:00,011 INFO L137 Inliner]: procedures = 67, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13101 [2021-12-15 11:50:00,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:50:00,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:50:00,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:50:00,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:50:00,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:59" (1/1) ... [2021-12-15 11:50:00,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:59" (1/1) ... [2021-12-15 11:50:00,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:59" (1/1) ... [2021-12-15 11:50:00,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:59" (1/1) ... [2021-12-15 11:50:00,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:59" (1/1) ... [2021-12-15 11:50:00,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:59" (1/1) ... [2021-12-15 11:50:00,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:59" (1/1) ... [2021-12-15 11:50:00,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:50:00,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:50:00,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:50:00,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:50:00,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:59" (1/1) ... [2021-12-15 11:50:00,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:50:00,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:50:00,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:50:00,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:50:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:50:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:50:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:50:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:50:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:50:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:50:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:50:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:50:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:50:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:50:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:50:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:50:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:50:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:50:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:50:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:50:00,588 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:50:00,589 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:50:06,798 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:50:06,821 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:50:06,822 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-12-15 11:50:06,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:50:06 BoogieIcfgContainer [2021-12-15 11:50:06,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:50:06,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:50:06,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:50:06,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:50:06,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:49:57" (1/3) ... [2021-12-15 11:50:06,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eed50d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:50:06, skipping insertion in model container [2021-12-15 11:50:06,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:59" (2/3) ... [2021-12-15 11:50:06,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eed50d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:50:06, skipping insertion in model container [2021-12-15 11:50:06,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:50:06" (3/3) ... [2021-12-15 11:50:06,831 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.11.cil-2.c [2021-12-15 11:50:06,834 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:50:06,834 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:50:06,871 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:50:06,875 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:50:06,876 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:50:06,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-15 11:50:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-15 11:50:06,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:50:06,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:50:06,930 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:50:06,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:50:06,933 INFO L85 PathProgramCache]: Analyzing trace with hash -17558896, now seen corresponding path program 1 times [2021-12-15 11:50:06,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:50:06,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863085015] [2021-12-15 11:50:06,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:50:06,943 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:50:06,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:50:06,945 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 11:50:06,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 11:50:06,999 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 11:50:07,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 11:50:07,194 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:50:07,198 INFO L158 Benchmark]: Toolchain (without parser) took 9974.19ms. Allocated memory was 79.7MB in the beginning and 813.7MB in the end (delta: 734.0MB). Free memory was 43.3MB in the beginning and 247.8MB in the end (delta: -204.5MB). Peak memory consumption was 528.4MB. Max. memory is 16.1GB. [2021-12-15 11:50:07,199 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 52.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:50:07,199 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2294.96ms. Allocated memory was 79.7MB in the beginning and 169.9MB in the end (delta: 90.2MB). Free memory was 43.2MB in the beginning and 50.6MB in the end (delta: -7.5MB). Peak memory consumption was 89.5MB. Max. memory is 16.1GB. [2021-12-15 11:50:07,200 INFO L158 Benchmark]: Boogie Procedure Inliner took 490.26ms. Allocated memory was 169.9MB in the beginning and 339.7MB in the end (delta: 169.9MB). Free memory was 50.6MB in the beginning and 214.2MB in the end (delta: -163.6MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2021-12-15 11:50:07,200 INFO L158 Benchmark]: Boogie Preprocessor took 372.33ms. Allocated memory is still 339.7MB. Free memory was 214.2MB in the beginning and 195.4MB in the end (delta: 18.8MB). Peak memory consumption was 93.3MB. Max. memory is 16.1GB. [2021-12-15 11:50:07,200 INFO L158 Benchmark]: RCFGBuilder took 6440.65ms. Allocated memory was 339.7MB in the beginning and 813.7MB in the end (delta: 474.0MB). Free memory was 195.4MB in the beginning and 276.1MB in the end (delta: -80.7MB). Peak memory consumption was 391.2MB. Max. memory is 16.1GB. [2021-12-15 11:50:07,201 INFO L158 Benchmark]: TraceAbstraction took 370.27ms. Allocated memory is still 813.7MB. Free memory was 275.0MB in the beginning and 247.8MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-12-15 11:50:07,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 52.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2294.96ms. Allocated memory was 79.7MB in the beginning and 169.9MB in the end (delta: 90.2MB). Free memory was 43.2MB in the beginning and 50.6MB in the end (delta: -7.5MB). Peak memory consumption was 89.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 490.26ms. Allocated memory was 169.9MB in the beginning and 339.7MB in the end (delta: 169.9MB). Free memory was 50.6MB in the beginning and 214.2MB in the end (delta: -163.6MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 372.33ms. Allocated memory is still 339.7MB. Free memory was 214.2MB in the beginning and 195.4MB in the end (delta: 18.8MB). Peak memory consumption was 93.3MB. Max. memory is 16.1GB. * RCFGBuilder took 6440.65ms. Allocated memory was 339.7MB in the beginning and 813.7MB in the end (delta: 474.0MB). Free memory was 195.4MB in the beginning and 276.1MB in the end (delta: -80.7MB). Peak memory consumption was 391.2MB. Max. memory is 16.1GB. * TraceAbstraction took 370.27ms. Allocated memory is still 813.7MB. Free memory was 275.0MB in the beginning and 247.8MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:50:07,230 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