./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound50.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/nla-digbench-scaling/divbin2_unwindbound50.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 5b0ae54926d75c04421ee4ea5930c958fb8ba0ccacc4d56435da8ae7b298172d --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:59:45,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:59:45,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:59:45,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:59:45,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:59:45,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:59:45,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:59:45,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:59:45,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:59:45,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:59:45,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:59:45,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:59:45,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:59:45,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:59:45,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:59:45,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:59:45,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:59:45,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:59:45,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:59:45,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:59:45,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:59:45,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:59:45,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:59:45,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:59:45,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:59:45,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:59:45,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:59:45,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:59:45,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:59:45,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:59:45,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:59:45,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:59:45,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:59:45,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:59:45,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:59:45,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:59:45,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:59:45,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:59:45,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:59:45,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:59:45,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:59:45,349 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:59:45,369 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:59:45,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:59:45,372 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:59:45,373 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:59:45,373 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:59:45,373 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:59:45,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:59:45,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:59:45,374 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:59:45,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:59:45,375 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:59:45,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:59:45,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:59:45,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:59:45,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:59:45,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:59:45,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:59:45,376 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:59:45,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:59:45,376 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:59:45,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:59:45,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:59:45,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:59:45,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:59:45,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:59:45,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:59:45,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:59:45,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:59:45,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:59:45,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:59:45,378 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:59:45,378 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:59:45,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:59:45,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:59:45,378 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b0ae54926d75c04421ee4ea5930c958fb8ba0ccacc4d56435da8ae7b298172d [2021-12-15 10:59:45,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:59:45,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:59:45,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:59:45,581 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:59:45,583 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:59:45,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound50.i [2021-12-15 10:59:45,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f30a1e36d/f2cf30cb8f954571a5b5b539817c51d6/FLAG2c8794c19 [2021-12-15 10:59:46,049 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:59:46,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound50.i [2021-12-15 10:59:46,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f30a1e36d/f2cf30cb8f954571a5b5b539817c51d6/FLAG2c8794c19 [2021-12-15 10:59:46,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f30a1e36d/f2cf30cb8f954571a5b5b539817c51d6 [2021-12-15 10:59:46,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:59:46,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:59:46,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:59:46,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:59:46,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:59:46,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:59:46" (1/1) ... [2021-12-15 10:59:46,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1973ee67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:46, skipping insertion in model container [2021-12-15 10:59:46,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:59:46" (1/1) ... [2021-12-15 10:59:46,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:59:46,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:59:46,626 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/nla-digbench-scaling/divbin2_unwindbound50.i[951,964] [2021-12-15 10:59:46,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:59:46,655 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:59:46,668 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/nla-digbench-scaling/divbin2_unwindbound50.i[951,964] [2021-12-15 10:59:46,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:59:46,692 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:59:46,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:46 WrapperNode [2021-12-15 10:59:46,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:59:46,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:59:46,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:59:46,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:59:46,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:46" (1/1) ... [2021-12-15 10:59:46,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:46" (1/1) ... [2021-12-15 10:59:46,717 INFO L137 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2021-12-15 10:59:46,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:59:46,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:59:46,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:59:46,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:59:46,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:46" (1/1) ... [2021-12-15 10:59:46,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:46" (1/1) ... [2021-12-15 10:59:46,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:46" (1/1) ... [2021-12-15 10:59:46,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:46" (1/1) ... [2021-12-15 10:59:46,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:46" (1/1) ... [2021-12-15 10:59:46,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:46" (1/1) ... [2021-12-15 10:59:46,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:46" (1/1) ... [2021-12-15 10:59:46,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:59:46,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:59:46,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:59:46,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:59:46,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:46" (1/1) ... [2021-12-15 10:59:46,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:59:46,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:59:46,857 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 10:59:46,896 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 10:59:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:59:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:59:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:59:46,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:59:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 10:59:46,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 10:59:46,958 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:59:46,960 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:59:47,080 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:59:47,084 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:59:47,089 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 10:59:47,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:59:47 BoogieIcfgContainer [2021-12-15 10:59:47,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:59:47,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:59:47,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:59:47,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:59:47,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:59:46" (1/3) ... [2021-12-15 10:59:47,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54fd8a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:59:47, skipping insertion in model container [2021-12-15 10:59:47,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:46" (2/3) ... [2021-12-15 10:59:47,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54fd8a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:59:47, skipping insertion in model container [2021-12-15 10:59:47,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:59:47" (3/3) ... [2021-12-15 10:59:47,103 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound50.i [2021-12-15 10:59:47,113 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:59:47,113 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:59:47,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:59:47,184 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 10:59:47,184 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:59:47,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 10:59:47,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 10:59:47,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:59:47,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:59:47,197 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:59:47,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:59:47,204 INFO L85 PathProgramCache]: Analyzing trace with hash 553144752, now seen corresponding path program 1 times [2021-12-15 10:59:47,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:59:47,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083263176] [2021-12-15 10:59:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:59:47,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:59:47,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 10:59:47,248 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 10:59:47,256 INFO L158 Benchmark]: Toolchain (without parser) took 767.92ms. Allocated memory is still 102.8MB. Free memory was 70.4MB in the beginning and 57.3MB in the end (delta: 13.0MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2021-12-15 10:59:47,256 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 71.3MB. Free memory was 34.4MB in the beginning and 34.4MB in the end (delta: 39.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:59:47,257 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.96ms. Allocated memory is still 102.8MB. Free memory was 70.2MB in the beginning and 78.3MB in the end (delta: -8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:59:47,258 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.91ms. Allocated memory is still 102.8MB. Free memory was 78.3MB in the beginning and 76.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:59:47,258 INFO L158 Benchmark]: Boogie Preprocessor took 29.68ms. Allocated memory is still 102.8MB. Free memory was 76.7MB in the beginning and 76.2MB in the end (delta: 523.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:59:47,259 INFO L158 Benchmark]: RCFGBuilder took 348.41ms. Allocated memory is still 102.8MB. Free memory was 75.7MB in the beginning and 66.7MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:59:47,260 INFO L158 Benchmark]: TraceAbstraction took 155.14ms. Allocated memory is still 102.8MB. Free memory was 66.2MB in the beginning and 57.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:59:47,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 71.3MB. Free memory was 34.4MB in the beginning and 34.4MB in the end (delta: 39.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 205.96ms. Allocated memory is still 102.8MB. Free memory was 70.2MB in the beginning and 78.3MB in the end (delta: -8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.91ms. Allocated memory is still 102.8MB. Free memory was 78.3MB in the beginning and 76.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.68ms. Allocated memory is still 102.8MB. Free memory was 76.7MB in the beginning and 76.2MB in the end (delta: 523.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 348.41ms. Allocated memory is still 102.8MB. Free memory was 75.7MB in the beginning and 66.7MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 155.14ms. Allocated memory is still 102.8MB. Free memory was 66.2MB in the beginning and 57.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. 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 10:59:47,320 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/nla-digbench-scaling/divbin2_unwindbound50.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 5b0ae54926d75c04421ee4ea5930c958fb8ba0ccacc4d56435da8ae7b298172d --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:59:49,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:59:49,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:59:49,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:59:49,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:59:49,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:59:49,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:59:49,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:59:49,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:59:49,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:59:49,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:59:49,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:59:49,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:59:49,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:59:49,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:59:49,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:59:49,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:59:49,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:59:49,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:59:49,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:59:49,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:59:49,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:59:49,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:59:49,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:59:49,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:59:49,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:59:49,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:59:49,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:59:49,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:59:49,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:59:49,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:59:49,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:59:49,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:59:49,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:59:49,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:59:49,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:59:49,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:59:49,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:59:49,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:59:49,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:59:49,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:59:49,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 10:59:49,125 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:59:49,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:59:49,126 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:59:49,126 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:59:49,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:59:49,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:59:49,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:59:49,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:59:49,130 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:59:49,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:59:49,130 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:59:49,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:59:49,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:59:49,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:59:49,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:59:49,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:59:49,131 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 10:59:49,132 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 10:59:49,132 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 10:59:49,132 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:59:49,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:59:49,132 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:59:49,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:59:49,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:59:49,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:59:49,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:59:49,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:59:49,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:59:49,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:59:49,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:59:49,134 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 10:59:49,134 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 10:59:49,134 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:59:49,134 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:59:49,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:59:49,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:59:49,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 10:59:49,135 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b0ae54926d75c04421ee4ea5930c958fb8ba0ccacc4d56435da8ae7b298172d [2021-12-15 10:59:49,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:59:49,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:59:49,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:59:49,444 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:59:49,445 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:59:49,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound50.i [2021-12-15 10:59:49,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4606196c/d8ff708c269848cc96b9df8b5aa4e4e5/FLAG8a5a19d8b [2021-12-15 10:59:49,902 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:59:49,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound50.i [2021-12-15 10:59:49,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4606196c/d8ff708c269848cc96b9df8b5aa4e4e5/FLAG8a5a19d8b [2021-12-15 10:59:49,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4606196c/d8ff708c269848cc96b9df8b5aa4e4e5 [2021-12-15 10:59:49,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:59:49,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:59:49,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:59:49,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:59:49,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:59:49,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:59:49" (1/1) ... [2021-12-15 10:59:49,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e6499e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:49, skipping insertion in model container [2021-12-15 10:59:49,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:59:49" (1/1) ... [2021-12-15 10:59:49,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:59:49,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:59:50,084 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/nla-digbench-scaling/divbin2_unwindbound50.i[951,964] [2021-12-15 10:59:50,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:59:50,106 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:59:50,142 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/nla-digbench-scaling/divbin2_unwindbound50.i[951,964] [2021-12-15 10:59:50,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:59:50,173 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:59:50,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:50 WrapperNode [2021-12-15 10:59:50,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:59:50,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:59:50,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:59:50,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:59:50,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:50" (1/1) ... [2021-12-15 10:59:50,199 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:50" (1/1) ... [2021-12-15 10:59:50,209 INFO L137 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2021-12-15 10:59:50,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:59:50,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:59:50,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:59:50,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:59:50,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:50" (1/1) ... [2021-12-15 10:59:50,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:50" (1/1) ... [2021-12-15 10:59:50,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:50" (1/1) ... [2021-12-15 10:59:50,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:50" (1/1) ... [2021-12-15 10:59:50,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:50" (1/1) ... [2021-12-15 10:59:50,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:50" (1/1) ... [2021-12-15 10:59:50,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:50" (1/1) ... [2021-12-15 10:59:50,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:59:50,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:59:50,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:59:50,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:59:50,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:50" (1/1) ... [2021-12-15 10:59:50,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:59:50,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:59:50,260 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 10:59:50,266 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 10:59:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:59:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 10:59:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:59:50,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:59:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 10:59:50,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 10:59:50,335 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:59:50,336 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:59:50,451 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:59:50,455 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:59:50,455 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 10:59:50,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:59:50 BoogieIcfgContainer [2021-12-15 10:59:50,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:59:50,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:59:50,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:59:50,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:59:50,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:59:49" (1/3) ... [2021-12-15 10:59:50,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90feb89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:59:50, skipping insertion in model container [2021-12-15 10:59:50,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:50" (2/3) ... [2021-12-15 10:59:50,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90feb89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:59:50, skipping insertion in model container [2021-12-15 10:59:50,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:59:50" (3/3) ... [2021-12-15 10:59:50,461 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound50.i [2021-12-15 10:59:50,464 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:59:50,464 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:59:50,501 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:59:50,505 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 10:59:50,505 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:59:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 10:59:50,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 10:59:50,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:59:50,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:59:50,518 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:59:50,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:59:50,525 INFO L85 PathProgramCache]: Analyzing trace with hash 553144752, now seen corresponding path program 1 times [2021-12-15 10:59:50,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 10:59:50,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984499611] [2021-12-15 10:59:50,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:59:50,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 10:59:50,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 10:59:50,561 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 10:59:50,562 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 10:59:50,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 10:59:50,811 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 10:59:50,812 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 10:59:50,817 INFO L158 Benchmark]: Toolchain (without parser) took 881.30ms. Allocated memory is still 77.6MB. Free memory was 62.2MB in the beginning and 40.2MB in the end (delta: 22.0MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2021-12-15 10:59:50,818 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 77.6MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:59:50,819 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.49ms. Allocated memory is still 77.6MB. Free memory was 62.0MB in the beginning and 61.0MB in the end (delta: 1.0MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2021-12-15 10:59:50,820 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.73ms. Allocated memory is still 77.6MB. Free memory was 61.0MB in the beginning and 59.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:59:50,821 INFO L158 Benchmark]: Boogie Preprocessor took 26.84ms. Allocated memory is still 77.6MB. Free memory was 59.4MB in the beginning and 58.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:59:50,822 INFO L158 Benchmark]: RCFGBuilder took 219.54ms. Allocated memory is still 77.6MB. Free memory was 58.3MB in the beginning and 49.0MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 10:59:50,822 INFO L158 Benchmark]: TraceAbstraction took 357.93ms. Allocated memory is still 77.6MB. Free memory was 48.5MB in the beginning and 40.2MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:59:50,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 77.6MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 237.49ms. Allocated memory is still 77.6MB. Free memory was 62.0MB in the beginning and 61.0MB in the end (delta: 1.0MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.73ms. Allocated memory is still 77.6MB. Free memory was 61.0MB in the beginning and 59.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.84ms. Allocated memory is still 77.6MB. Free memory was 59.4MB in the beginning and 58.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 219.54ms. Allocated memory is still 77.6MB. Free memory was 58.3MB in the beginning and 49.0MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 357.93ms. Allocated memory is still 77.6MB. Free memory was 48.5MB in the beginning and 40.2MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. 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 10:59:50,877 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