./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/fib_unsafe-7.i --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/pthread/fib_unsafe-7.i -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 a938b9e3b803ef0b08d2618a78ac055be54a6e48f84c6853aab11e3467af8157 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:20:50,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:20:50,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:20:50,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:20:50,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:20:50,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:20:50,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:20:50,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:20:50,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:20:50,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:20:50,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:20:50,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:20:50,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:20:50,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:20:50,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:20:50,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:20:50,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:20:50,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:20:50,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:20:50,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:20:50,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:20:50,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:20:50,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:20:50,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:20:50,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:20:50,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:20:50,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:20:50,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:20:50,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:20:50,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:20:50,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:20:50,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:20:50,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:20:50,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:20:50,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:20:50,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:20:50,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:20:50,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:20:50,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:20:50,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:20:50,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:20:50,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 12:20:50,682 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:20:50,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:20:50,684 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:20:50,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:20:50,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:20:50,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:20:50,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:20:50,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:20:50,685 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:20:50,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:20:50,686 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:20:50,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:20:50,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:20:50,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:20:50,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:20:50,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:20:50,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:20:50,688 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:20:50,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:20:50,688 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:20:50,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:20:50,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:20:50,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:20:50,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:20:50,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:20:50,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:20:50,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:20:50,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:20:50,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:20:50,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:20:50,690 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:20:50,691 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:20:50,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:20:50,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:20:50,691 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a938b9e3b803ef0b08d2618a78ac055be54a6e48f84c6853aab11e3467af8157 [2021-12-15 12:20:50,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:20:50,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:20:50,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:20:50,913 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:20:50,914 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:20:50,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_unsafe-7.i [2021-12-15 12:20:50,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fa992f21/b5a11708a38a4c249a825514a0070635/FLAG4b52eb0e6 [2021-12-15 12:20:51,410 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:20:51,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-7.i [2021-12-15 12:20:51,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fa992f21/b5a11708a38a4c249a825514a0070635/FLAG4b52eb0e6 [2021-12-15 12:20:51,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fa992f21/b5a11708a38a4c249a825514a0070635 [2021-12-15 12:20:51,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:20:51,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:20:51,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:20:51,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:20:51,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:20:51,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:20:51" (1/1) ... [2021-12-15 12:20:51,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf9ceae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:51, skipping insertion in model container [2021-12-15 12:20:51,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:20:51" (1/1) ... [2021-12-15 12:20:51,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:20:51,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:20:51,713 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/pthread/fib_unsafe-7.i[30811,30824] [2021-12-15 12:20:51,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:20:51,720 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:20:51,754 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/pthread/fib_unsafe-7.i[30811,30824] [2021-12-15 12:20:51,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:20:51,786 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:20:51,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:51 WrapperNode [2021-12-15 12:20:51,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:20:51,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:20:51,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:20:51,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:20:51,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:51" (1/1) ... [2021-12-15 12:20:51,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:51" (1/1) ... [2021-12-15 12:20:51,833 INFO L137 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2021-12-15 12:20:51,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:20:51,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:20:51,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:20:51,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:20:51,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:51" (1/1) ... [2021-12-15 12:20:51,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:51" (1/1) ... [2021-12-15 12:20:51,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:51" (1/1) ... [2021-12-15 12:20:51,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:51" (1/1) ... [2021-12-15 12:20:51,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:51" (1/1) ... [2021-12-15 12:20:51,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:51" (1/1) ... [2021-12-15 12:20:51,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:51" (1/1) ... [2021-12-15 12:20:51,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:20:51,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:20:51,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:20:51,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:20:51,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:51" (1/1) ... [2021-12-15 12:20:51,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:20:51,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:20:51,896 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 12:20:51,908 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 12:20:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-12-15 12:20:51,926 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-12-15 12:20:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-12-15 12:20:51,926 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-12-15 12:20:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 12:20:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-15 12:20:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:20:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 12:20:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 12:20:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:20:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-15 12:20:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:20:51,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:20:51,928 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-15 12:20:51,991 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:20:51,992 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:20:52,095 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:20:52,099 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:20:52,100 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-15 12:20:52,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:20:52 BoogieIcfgContainer [2021-12-15 12:20:52,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:20:52,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:20:52,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:20:52,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:20:52,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:20:51" (1/3) ... [2021-12-15 12:20:52,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31fa2d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:20:52, skipping insertion in model container [2021-12-15 12:20:52,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:51" (2/3) ... [2021-12-15 12:20:52,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31fa2d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:20:52, skipping insertion in model container [2021-12-15 12:20:52,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:20:52" (3/3) ... [2021-12-15 12:20:52,106 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_unsafe-7.i [2021-12-15 12:20:52,109 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-15 12:20:52,109 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:20:52,110 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 12:20:52,110 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-15 12:20:52,156 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,157 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,157 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,157 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,157 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,157 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,158 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,158 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,158 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,158 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,159 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,159 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,159 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,159 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,160 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,160 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,160 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,160 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,161 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,161 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,161 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,162 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,162 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,162 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,162 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,162 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,173 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,173 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,174 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,174 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,174 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,174 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,184 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,185 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,185 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,185 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:52,186 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.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ThreadInstanceAdder.connectThreadInstances(ThreadInstanceAdder.java:116) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.IcfgPetrifier.(IcfgPetrifier.java:136) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.petrify(TraceAbstractionStarter.java:514) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) 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 12:20:52,189 INFO L158 Benchmark]: Toolchain (without parser) took 760.29ms. Allocated memory was 79.7MB in the beginning and 98.6MB in the end (delta: 18.9MB). Free memory was 56.1MB in the beginning and 74.8MB in the end (delta: -18.7MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2021-12-15 12:20:52,195 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 79.7MB. Free memory is still 57.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:20:52,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.91ms. Allocated memory was 79.7MB in the beginning and 98.6MB in the end (delta: 18.9MB). Free memory was 55.9MB in the beginning and 64.1MB in the end (delta: -8.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 12:20:52,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.53ms. Allocated memory is still 98.6MB. Free memory was 64.1MB in the beginning and 62.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 12:20:52,197 INFO L158 Benchmark]: Boogie Preprocessor took 34.35ms. Allocated memory is still 98.6MB. Free memory was 62.0MB in the beginning and 60.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:20:52,197 INFO L158 Benchmark]: RCFGBuilder took 231.96ms. Allocated memory is still 98.6MB. Free memory was 60.6MB in the beginning and 48.3MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 12:20:52,198 INFO L158 Benchmark]: TraceAbstraction took 85.88ms. Allocated memory is still 98.6MB. Free memory was 48.0MB in the beginning and 74.8MB in the end (delta: -26.8MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2021-12-15 12:20:52,200 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 79.7MB. Free memory is still 57.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 357.91ms. Allocated memory was 79.7MB in the beginning and 98.6MB in the end (delta: 18.9MB). Free memory was 55.9MB in the beginning and 64.1MB in the end (delta: -8.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.53ms. Allocated memory is still 98.6MB. Free memory was 64.1MB in the beginning and 62.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.35ms. Allocated memory is still 98.6MB. Free memory was 62.0MB in the beginning and 60.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 231.96ms. Allocated memory is still 98.6MB. Free memory was 60.6MB in the beginning and 48.3MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 85.88ms. Allocated memory is still 98.6MB. Free memory was 48.0MB in the beginning and 74.8MB in the end (delta: -26.8MB). Peak memory consumption was 12.5MB. 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 12:20:52,230 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 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/pthread/fib_unsafe-7.i -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 a938b9e3b803ef0b08d2618a78ac055be54a6e48f84c6853aab11e3467af8157 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:20:53,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:20:53,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:20:53,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:20:53,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:20:53,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:20:54,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:20:54,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:20:54,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:20:54,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:20:54,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:20:54,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:20:54,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:20:54,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:20:54,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:20:54,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:20:54,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:20:54,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:20:54,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:20:54,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:20:54,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:20:54,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:20:54,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:20:54,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:20:54,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:20:54,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:20:54,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:20:54,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:20:54,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:20:54,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:20:54,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:20:54,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:20:54,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:20:54,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:20:54,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:20:54,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:20:54,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:20:54,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:20:54,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:20:54,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:20:54,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:20:54,056 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 12:20:54,096 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:20:54,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:20:54,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:20:54,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:20:54,098 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:20:54,098 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:20:54,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:20:54,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:20:54,100 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:20:54,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:20:54,101 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:20:54,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:20:54,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:20:54,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:20:54,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:20:54,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:20:54,102 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 12:20:54,102 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 12:20:54,102 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 12:20:54,103 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:20:54,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:20:54,103 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:20:54,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:20:54,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:20:54,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:20:54,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:20:54,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:20:54,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:20:54,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:20:54,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:20:54,105 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 12:20:54,105 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 12:20:54,105 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:20:54,105 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:20:54,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:20:54,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:20:54,106 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 12:20:54,106 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a938b9e3b803ef0b08d2618a78ac055be54a6e48f84c6853aab11e3467af8157 [2021-12-15 12:20:54,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:20:54,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:20:54,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:20:54,427 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:20:54,427 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:20:54,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_unsafe-7.i [2021-12-15 12:20:54,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bae38baf/92c0e98040b54bd0b6c2c85e7c983e53/FLAGb9dc5cb14 [2021-12-15 12:20:54,900 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:20:54,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-7.i [2021-12-15 12:20:54,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bae38baf/92c0e98040b54bd0b6c2c85e7c983e53/FLAGb9dc5cb14 [2021-12-15 12:20:55,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bae38baf/92c0e98040b54bd0b6c2c85e7c983e53 [2021-12-15 12:20:55,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:20:55,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:20:55,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:20:55,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:20:55,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:20:55,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:20:55" (1/1) ... [2021-12-15 12:20:55,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ae854d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:55, skipping insertion in model container [2021-12-15 12:20:55,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:20:55" (1/1) ... [2021-12-15 12:20:55,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:20:55,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:20:55,606 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/pthread/fib_unsafe-7.i[30811,30824] [2021-12-15 12:20:55,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:20:55,617 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:20:55,654 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/pthread/fib_unsafe-7.i[30811,30824] [2021-12-15 12:20:55,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:20:55,684 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:20:55,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:55 WrapperNode [2021-12-15 12:20:55,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:20:55,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:20:55,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:20:55,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:20:55,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:55" (1/1) ... [2021-12-15 12:20:55,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:55" (1/1) ... [2021-12-15 12:20:55,719 INFO L137 Inliner]: procedures = 167, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2021-12-15 12:20:55,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:20:55,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:20:55,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:20:55,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:20:55,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:55" (1/1) ... [2021-12-15 12:20:55,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:55" (1/1) ... [2021-12-15 12:20:55,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:55" (1/1) ... [2021-12-15 12:20:55,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:55" (1/1) ... [2021-12-15 12:20:55,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:55" (1/1) ... [2021-12-15 12:20:55,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:55" (1/1) ... [2021-12-15 12:20:55,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:55" (1/1) ... [2021-12-15 12:20:55,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:20:55,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:20:55,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:20:55,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:20:55,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:55" (1/1) ... [2021-12-15 12:20:55,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:20:55,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:20:55,798 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 12:20:55,823 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 12:20:55,843 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-12-15 12:20:55,844 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-12-15 12:20:55,844 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-12-15 12:20:55,844 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-12-15 12:20:55,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-15 12:20:55,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:20:55,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 12:20:55,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 12:20:55,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 12:20:55,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 12:20:55,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-15 12:20:55,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:20:55,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:20:55,846 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-15 12:20:55,957 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:20:55,958 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:20:56,140 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:20:56,144 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:20:56,144 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-15 12:20:56,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:20:56 BoogieIcfgContainer [2021-12-15 12:20:56,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:20:56,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:20:56,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:20:56,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:20:56,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:20:55" (1/3) ... [2021-12-15 12:20:56,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5274b36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:20:56, skipping insertion in model container [2021-12-15 12:20:56,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:20:55" (2/3) ... [2021-12-15 12:20:56,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5274b36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:20:56, skipping insertion in model container [2021-12-15 12:20:56,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:20:56" (3/3) ... [2021-12-15 12:20:56,150 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_unsafe-7.i [2021-12-15 12:20:56,153 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-15 12:20:56,153 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:20:56,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 12:20:56,153 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-15 12:20:56,179 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,180 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,180 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,180 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,180 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,180 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,181 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,181 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,181 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,182 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,182 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,182 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,182 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,182 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,182 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,183 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,183 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,183 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,184 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,184 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,185 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,185 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,185 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,185 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,186 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,186 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,186 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,186 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,186 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,186 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,188 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,188 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,188 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,188 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,189 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,189 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-15 12:20:56,189 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.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ThreadInstanceAdder.connectThreadInstances(ThreadInstanceAdder.java:116) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.IcfgPetrifier.(IcfgPetrifier.java:136) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.petrify(TraceAbstractionStarter.java:514) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) 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 12:20:56,194 INFO L158 Benchmark]: Toolchain (without parser) took 920.89ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 53.1MB in the beginning and 59.7MB in the end (delta: -6.6MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2021-12-15 12:20:56,195 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 71.3MB. Free memory is still 54.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:20:56,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.88ms. Allocated memory is still 71.3MB. Free memory was 52.8MB in the beginning and 45.2MB in the end (delta: 7.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 12:20:56,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.41ms. Allocated memory is still 71.3MB. Free memory was 45.2MB in the beginning and 43.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 12:20:56,196 INFO L158 Benchmark]: Boogie Preprocessor took 31.89ms. Allocated memory is still 71.3MB. Free memory was 42.9MB in the beginning and 41.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:20:56,197 INFO L158 Benchmark]: RCFGBuilder took 392.30ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 41.3MB in the beginning and 64.5MB in the end (delta: -23.1MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2021-12-15 12:20:56,198 INFO L158 Benchmark]: TraceAbstraction took 45.30ms. Allocated memory is still 86.0MB. Free memory was 64.3MB in the beginning and 59.7MB in the end (delta: 4.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 12:20:56,203 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 71.3MB. Free memory is still 54.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.88ms. Allocated memory is still 71.3MB. Free memory was 52.8MB in the beginning and 45.2MB in the end (delta: 7.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.41ms. Allocated memory is still 71.3MB. Free memory was 45.2MB in the beginning and 43.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.89ms. Allocated memory is still 71.3MB. Free memory was 42.9MB in the beginning and 41.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 392.30ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 41.3MB in the beginning and 64.5MB in the end (delta: -23.1MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * TraceAbstraction took 45.30ms. Allocated memory is still 86.0MB. Free memory was 64.3MB in the beginning and 59.7MB in the end (delta: 4.6MB). Peak memory consumption was 6.3MB. 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 12:20:56,257 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