./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_4+newton_3_8.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/combinations/gcd_4+newton_3_8.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 5e702e85c3d7f91108386d3bed8993d879aa98d42d10adbcd14f5fa9bf29e29b --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:59:19,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:59:19,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:59:19,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:59:19,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:59:19,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:59:19,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:59:19,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:59:19,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:59:19,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:59:19,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:59:19,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:59:19,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:59:19,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:59:19,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:59:19,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:59:19,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:59:19,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:59:19,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:59:19,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:59:19,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:59:19,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:59:19,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:59:19,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:59:19,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:59:19,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:59:19,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:59:19,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:59:19,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:59:19,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:59:19,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:59:19,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:59:19,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:59:19,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:59:19,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:59:19,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:59:19,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:59:19,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:59:19,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:59:19,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:59:19,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:59:19,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:59:19,394 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:59:19,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:59:19,398 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:59:19,398 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:59:19,399 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:59:19,399 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:59:19,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:59:19,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:59:19,400 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:59:19,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:59:19,401 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:59:19,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:59:19,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:59:19,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:59:19,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:59:19,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:59:19,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:59:19,401 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:59:19,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:59:19,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:59:19,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:59:19,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:59:19,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:59:19,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:59:19,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:59:19,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:59:19,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:59:19,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:59:19,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:59:19,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:59:19,403 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:59:19,404 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:59:19,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:59:19,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:59:19,404 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e702e85c3d7f91108386d3bed8993d879aa98d42d10adbcd14f5fa9bf29e29b [2021-12-15 11:59:19,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:59:19,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:59:19,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:59:19,645 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:59:19,645 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:59:19,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_3_8.i [2021-12-15 11:59:19,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1c3ad54/d670b05f0e5749ef8c18d69c79da8827/FLAG3ef349a27 [2021-12-15 11:59:20,064 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:59:20,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_3_8.i [2021-12-15 11:59:20,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1c3ad54/d670b05f0e5749ef8c18d69c79da8827/FLAG3ef349a27 [2021-12-15 11:59:20,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1c3ad54/d670b05f0e5749ef8c18d69c79da8827 [2021-12-15 11:59:20,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:59:20,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:59:20,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:59:20,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:59:20,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:59:20,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:59:20" (1/1) ... [2021-12-15 11:59:20,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cfed57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:20, skipping insertion in model container [2021-12-15 11:59:20,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:59:20" (1/1) ... [2021-12-15 11:59:20,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:59:20,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:59:20,707 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_3_8.i[1224,1237] [2021-12-15 11:59:20,747 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_3_8.i[2848,2861] [2021-12-15 11:59:20,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:59:20,756 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:59:20,769 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_3_8.i[1224,1237] [2021-12-15 11:59:20,787 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_3_8.i[2848,2861] [2021-12-15 11:59:20,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:59:20,799 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:59:20,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:20 WrapperNode [2021-12-15 11:59:20,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:59:20,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:59:20,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:59:20,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:59:20,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:20" (1/1) ... [2021-12-15 11:59:20,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:20" (1/1) ... [2021-12-15 11:59:20,837 INFO L137 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 77 [2021-12-15 11:59:20,837 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:59:20,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:59:20,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:59:20,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:59:20,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:20" (1/1) ... [2021-12-15 11:59:20,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:20" (1/1) ... [2021-12-15 11:59:20,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:20" (1/1) ... [2021-12-15 11:59:20,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:20" (1/1) ... [2021-12-15 11:59:20,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:20" (1/1) ... [2021-12-15 11:59:20,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:20" (1/1) ... [2021-12-15 11:59:20,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:20" (1/1) ... [2021-12-15 11:59:20,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:59:20,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:59:20,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:59:20,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:59:20,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:20" (1/1) ... [2021-12-15 11:59:20,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:59:20,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:59:20,896 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 11:59:20,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:59:20,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:59:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-15 11:59:20,943 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-15 11:59:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-15 11:59:20,943 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-15 11:59:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:59:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:59:20,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:59:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 11:59:20,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 11:59:20,993 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:59:20,994 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:59:21,167 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:59:21,171 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:59:21,173 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:59:21,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:59:21 BoogieIcfgContainer [2021-12-15 11:59:21,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:59:21,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:59:21,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:59:21,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:59:21,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:59:20" (1/3) ... [2021-12-15 11:59:21,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7688a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:59:21, skipping insertion in model container [2021-12-15 11:59:21,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:20" (2/3) ... [2021-12-15 11:59:21,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7688a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:59:21, skipping insertion in model container [2021-12-15 11:59:21,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:59:21" (3/3) ... [2021-12-15 11:59:21,181 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_3_8.i [2021-12-15 11:59:21,188 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:59:21,188 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:59:21,218 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:59:21,223 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:59:21,223 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:59:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 33 states have internal predecessors, (43), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-15 11:59:21,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 11:59:21,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:59:21,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:59:21,242 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:59:21,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:59:21,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1780387208, now seen corresponding path program 1 times [2021-12-15 11:59:21,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:59:21,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461184520] [2021-12-15 11:59:21,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:59:21,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:59:21,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:59:21,313 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:59:21,321 INFO L158 Benchmark]: Toolchain (without parser) took 808.08ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 93.1MB in the beginning and 110.8MB in the end (delta: -17.6MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2021-12-15 11:59:21,322 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:59:21,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.78ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 93.1MB in the beginning and 134.3MB in the end (delta: -41.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2021-12-15 11:59:21,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.46ms. Allocated memory is still 159.4MB. Free memory was 134.3MB in the beginning and 132.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:59:21,324 INFO L158 Benchmark]: Boogie Preprocessor took 31.52ms. Allocated memory is still 159.4MB. Free memory was 132.7MB in the beginning and 131.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:59:21,324 INFO L158 Benchmark]: RCFGBuilder took 304.16ms. Allocated memory is still 159.4MB. Free memory was 131.3MB in the beginning and 120.6MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 11:59:21,328 INFO L158 Benchmark]: TraceAbstraction took 143.66ms. Allocated memory is still 159.4MB. Free memory was 120.1MB in the beginning and 110.8MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:59:21,333 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.78ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 93.1MB in the beginning and 134.3MB in the end (delta: -41.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.46ms. Allocated memory is still 159.4MB. Free memory was 134.3MB in the beginning and 132.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.52ms. Allocated memory is still 159.4MB. Free memory was 132.7MB in the beginning and 131.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 304.16ms. Allocated memory is still 159.4MB. Free memory was 131.3MB in the beginning and 120.6MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 143.66ms. Allocated memory is still 159.4MB. Free memory was 120.1MB in the beginning and 110.8MB in the end (delta: 9.3MB). 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 11:59:21,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_4+newton_3_8.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 5e702e85c3d7f91108386d3bed8993d879aa98d42d10adbcd14f5fa9bf29e29b --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:59:23,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:59:23,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:59:23,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:59:23,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:59:23,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:59:23,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:59:23,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:59:23,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:59:23,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:59:23,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:59:23,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:59:23,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:59:23,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:59:23,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:59:23,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:59:23,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:59:23,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:59:23,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:59:23,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:59:23,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:59:23,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:59:23,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:59:23,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:59:23,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:59:23,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:59:23,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:59:23,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:59:23,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:59:23,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:59:23,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:59:23,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:59:23,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:59:23,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:59:23,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:59:23,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:59:23,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:59:23,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:59:23,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:59:23,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:59:23,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:59:23,292 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:59:23,318 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:59:23,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:59:23,319 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:59:23,320 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:59:23,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:59:23,321 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:59:23,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:59:23,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:59:23,322 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:59:23,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:59:23,323 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:59:23,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:59:23,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:59:23,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:59:23,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:59:23,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:59:23,324 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:59:23,324 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:59:23,324 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:59:23,324 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:59:23,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:59:23,324 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:59:23,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:59:23,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:59:23,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:59:23,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:59:23,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:59:23,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:59:23,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:59:23,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:59:23,326 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:59:23,326 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:59:23,326 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:59:23,326 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:59:23,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:59:23,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:59:23,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:59:23,327 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e702e85c3d7f91108386d3bed8993d879aa98d42d10adbcd14f5fa9bf29e29b [2021-12-15 11:59:23,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:59:23,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:59:23,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:59:23,620 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:59:23,621 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:59:23,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_3_8.i [2021-12-15 11:59:23,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8edf86f/1f22708cf02d49409c5d4286677a2b87/FLAG597368d07 [2021-12-15 11:59:24,034 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:59:24,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_3_8.i [2021-12-15 11:59:24,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8edf86f/1f22708cf02d49409c5d4286677a2b87/FLAG597368d07 [2021-12-15 11:59:24,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8edf86f/1f22708cf02d49409c5d4286677a2b87 [2021-12-15 11:59:24,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:59:24,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:59:24,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:59:24,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:59:24,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:59:24,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:59:24" (1/1) ... [2021-12-15 11:59:24,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34079cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:24, skipping insertion in model container [2021-12-15 11:59:24,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:59:24" (1/1) ... [2021-12-15 11:59:24,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:59:24,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:59:24,650 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_3_8.i[1224,1237] [2021-12-15 11:59:24,687 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_3_8.i[2848,2861] [2021-12-15 11:59:24,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:59:24,704 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:59:24,736 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_3_8.i[1224,1237] [2021-12-15 11:59:24,762 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_3_8.i[2848,2861] [2021-12-15 11:59:24,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:59:24,779 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:59:24,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:24 WrapperNode [2021-12-15 11:59:24,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:59:24,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:59:24,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:59:24,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:59:24,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:24" (1/1) ... [2021-12-15 11:59:24,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:24" (1/1) ... [2021-12-15 11:59:24,826 INFO L137 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 74 [2021-12-15 11:59:24,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:59:24,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:59:24,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:59:24,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:59:24,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:24" (1/1) ... [2021-12-15 11:59:24,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:24" (1/1) ... [2021-12-15 11:59:24,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:24" (1/1) ... [2021-12-15 11:59:24,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:24" (1/1) ... [2021-12-15 11:59:24,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:24" (1/1) ... [2021-12-15 11:59:24,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:24" (1/1) ... [2021-12-15 11:59:24,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:24" (1/1) ... [2021-12-15 11:59:24,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:59:24,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:59:24,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:59:24,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:59:24,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:24" (1/1) ... [2021-12-15 11:59:24,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:59:24,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:59:24,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:59:24,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:59:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:59:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:59:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-15 11:59:24,917 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-15 11:59:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-15 11:59:24,917 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-15 11:59:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:59:24,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:59:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 11:59:24,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 11:59:24,985 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:59:24,987 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:59:35,614 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:59:35,618 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:59:35,618 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:59:35,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:59:35 BoogieIcfgContainer [2021-12-15 11:59:35,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:59:35,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:59:35,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:59:35,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:59:35,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:59:24" (1/3) ... [2021-12-15 11:59:35,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166e3916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:59:35, skipping insertion in model container [2021-12-15 11:59:35,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:24" (2/3) ... [2021-12-15 11:59:35,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166e3916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:59:35, skipping insertion in model container [2021-12-15 11:59:35,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:59:35" (3/3) ... [2021-12-15 11:59:35,636 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_3_8.i [2021-12-15 11:59:35,639 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:59:35,639 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:59:35,671 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:59:35,676 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:59:35,676 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:59:35,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 33 states have internal predecessors, (43), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-15 11:59:35,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 11:59:35,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:59:35,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:59:35,694 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:59:35,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:59:35,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1780387208, now seen corresponding path program 1 times [2021-12-15 11:59:35,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:59:35,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837263702] [2021-12-15 11:59:35,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:59:35,707 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:59:35,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:59:35,709 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 11:59:35,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 11:59:35,737 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 11:59:35,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 11:59:35,939 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:59:35,942 INFO L158 Benchmark]: Toolchain (without parser) took 11463.01ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 42.2MB in the beginning and 52.4MB in the end (delta: -10.2MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2021-12-15 11:59:35,942 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 43.4MB in the beginning and 43.3MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:59:35,943 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.89ms. Allocated memory is still 60.8MB. Free memory was 42.1MB in the beginning and 43.4MB in the end (delta: -1.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 11:59:35,944 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.71ms. Allocated memory is still 60.8MB. Free memory was 43.4MB in the beginning and 41.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:59:35,944 INFO L158 Benchmark]: Boogie Preprocessor took 35.20ms. Allocated memory is still 60.8MB. Free memory was 41.7MB in the beginning and 40.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:59:35,945 INFO L158 Benchmark]: RCFGBuilder took 10755.09ms. Allocated memory is still 60.8MB. Free memory was 40.2MB in the beginning and 29.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 11:59:35,945 INFO L158 Benchmark]: TraceAbstraction took 320.21ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 28.8MB in the beginning and 52.4MB in the end (delta: -23.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:59:35,950 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 43.4MB in the beginning and 43.3MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.89ms. Allocated memory is still 60.8MB. Free memory was 42.1MB in the beginning and 43.4MB in the end (delta: -1.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.71ms. Allocated memory is still 60.8MB. Free memory was 43.4MB in the beginning and 41.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.20ms. Allocated memory is still 60.8MB. Free memory was 41.7MB in the beginning and 40.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 10755.09ms. Allocated memory is still 60.8MB. Free memory was 40.2MB in the beginning and 29.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 320.21ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 28.8MB in the beginning and 52.4MB in the end (delta: -23.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:59:36,098 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