./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_4+newton_3_6.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_6.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 d2ff4855d3411c2183b4955db69fb0d32886e02ca6014c3e616f77788a55bdc3 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:59:19,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:59:19,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:59:19,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:59:19,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:59:19,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:59:19,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:59:19,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:59:19,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:59:19,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:59:19,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:59:19,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:59:19,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:59:19,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:59:19,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:59:19,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:59:19,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:59:19,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:59:19,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:59:19,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:59:19,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:59:19,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:59:19,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:59:19,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:59:19,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:59:19,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:59:19,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:59:19,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:59:19,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:59:19,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:59:19,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:59:19,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:59:19,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:59:19,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:59:19,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:59:19,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:59:19,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:59:19,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:59:19,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:59:19,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:59:19,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:59:19,249 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:59:19,277 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:59:19,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:59:19,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:59:19,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:59:19,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:59:19,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:59:19,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:59:19,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:59:19,279 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:59:19,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:59:19,280 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:59:19,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:59:19,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:59:19,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:59:19,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:59:19,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:59:19,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:59:19,281 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:59:19,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:59:19,281 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:59:19,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:59:19,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:59:19,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:59:19,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:59:19,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:59:19,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:59:19,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:59:19,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:59:19,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:59:19,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:59:19,283 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:59:19,283 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:59:19,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:59:19,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:59:19,284 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2ff4855d3411c2183b4955db69fb0d32886e02ca6014c3e616f77788a55bdc3 [2021-12-15 11:59:19,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:59:19,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:59:19,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:59:19,511 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:59:19,511 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:59:19,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_3_6.i [2021-12-15 11:59:19,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3655851f6/b89954ff64204f2498ed4c84cbe0b651/FLAG1e63c8560 [2021-12-15 11:59:19,884 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:59:19,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_3_6.i [2021-12-15 11:59:19,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3655851f6/b89954ff64204f2498ed4c84cbe0b651/FLAG1e63c8560 [2021-12-15 11:59:20,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3655851f6/b89954ff64204f2498ed4c84cbe0b651 [2021-12-15 11:59:20,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:59:20,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:59:20,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:59:20,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:59:20,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:59:20,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:59:20" (1/1) ... [2021-12-15 11:59:20,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15963d5b 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 11:59:20,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:59:20" (1/1) ... [2021-12-15 11:59:20,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:59:20,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:59:20,482 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_6.i[1224,1237] [2021-12-15 11:59:20,517 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_6.i[2848,2861] [2021-12-15 11:59:20,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:59:20,527 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:59:20,539 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_6.i[1224,1237] [2021-12-15 11:59:20,552 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_6.i[2848,2861] [2021-12-15 11:59:20,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:59:20,562 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:59:20,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:20 WrapperNode [2021-12-15 11:59:20,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:59:20,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:59:20,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:59:20,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:59:20,578 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 11:59:20,583 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 11:59:20,596 INFO L137 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 77 [2021-12-15 11:59:20,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:59:20,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:59:20,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:59:20,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:59:20,605 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 11:59:20,606 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 11:59:20,617 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 11:59:20,617 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 11:59:20,625 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 11:59:20,635 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 11:59:20,637 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 11:59:20,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:59:20,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:59:20,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:59:20,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:59:20,640 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 11:59:20,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:59:20,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:59:20,685 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 11:59:20,704 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 11:59:20,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:59:20,735 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-15 11:59:20,735 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-15 11:59:20,735 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-15 11:59:20,737 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-15 11:59:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:59:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:59:20,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:59:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 11:59:20,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 11:59:20,820 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:59:20,836 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:59:21,027 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:59:21,031 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:59:21,032 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:59:21,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:59:21 BoogieIcfgContainer [2021-12-15 11:59:21,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:59:21,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:59:21,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:59:21,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:59:21,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:59:20" (1/3) ... [2021-12-15 11:59:21,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2ce499 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 11:59:21,050 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 11:59:21,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2ce499 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 11:59:21,050 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 11:59:21,051 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_3_6.i [2021-12-15 11:59:21,055 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:59:21,055 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:59:21,115 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:59:21,126 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 11:59:21,126 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:59:21,152 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 11:59:21,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 11:59:21,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:59:21,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:59:21,157 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:59:21,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:59:21,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1780387208, now seen corresponding path program 1 times [2021-12-15 11:59:21,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:59:21,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783119215] [2021-12-15 11:59:21,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:59:21,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:59:21,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:59:21,220 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 11:59:21,229 INFO L158 Benchmark]: Toolchain (without parser) took 923.40ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 66.2MB in the beginning and 84.1MB in the end (delta: -17.9MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2021-12-15 11:59:21,230 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 96.5MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:59:21,231 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.93ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 66.2MB in the beginning and 108.4MB in the end (delta: -42.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 11:59:21,232 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.76ms. Allocated memory is still 132.1MB. Free memory was 107.8MB in the beginning and 106.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:59:21,233 INFO L158 Benchmark]: Boogie Preprocessor took 39.80ms. Allocated memory is still 132.1MB. Free memory was 106.3MB in the beginning and 105.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:59:21,233 INFO L158 Benchmark]: RCFGBuilder took 393.47ms. Allocated memory is still 132.1MB. Free memory was 105.1MB in the beginning and 93.7MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 11:59:21,238 INFO L158 Benchmark]: TraceAbstraction took 193.24ms. Allocated memory is still 132.1MB. Free memory was 93.1MB in the beginning and 84.1MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:59:21,243 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 96.5MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.93ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 66.2MB in the beginning and 108.4MB in the end (delta: -42.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.76ms. Allocated memory is still 132.1MB. Free memory was 107.8MB in the beginning and 106.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.80ms. Allocated memory is still 132.1MB. Free memory was 106.3MB in the beginning and 105.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 393.47ms. Allocated memory is still 132.1MB. Free memory was 105.1MB in the beginning and 93.7MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 193.24ms. Allocated memory is still 132.1MB. Free memory was 93.1MB in the beginning and 84.1MB in the end (delta: 9.0MB). 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 11:59:21,279 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_6.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 d2ff4855d3411c2183b4955db69fb0d32886e02ca6014c3e616f77788a55bdc3 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:59:23,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:59:23,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:59:23,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:59:23,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:59:23,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:59:23,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:59:23,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:59:23,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:59:23,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:59:23,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:59:23,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:59:23,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:59:23,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:59:23,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:59:23,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:59:23,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:59:23,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:59:23,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:59:23,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:59:23,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:59:23,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:59:23,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:59:23,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:59:23,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:59:23,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:59:23,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:59:23,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:59:23,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:59:23,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:59:23,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:59:23,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:59:23,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:59:23,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:59:23,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:59:23,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:59:23,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:59:23,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:59:23,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:59:23,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:59:23,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:59:23,155 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:59:23,184 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:59:23,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:59:23,185 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:59:23,185 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:59:23,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:59:23,186 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:59:23,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:59:23,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:59:23,187 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:59:23,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:59:23,188 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:59:23,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:59:23,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:59:23,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:59:23,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:59:23,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:59:23,189 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:59:23,189 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:59:23,189 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:59:23,189 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:59:23,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:59:23,189 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:59:23,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:59:23,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:59:23,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:59:23,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:59:23,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:59:23,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:59:23,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:59:23,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:59:23,191 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:59:23,191 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:59:23,191 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:59:23,191 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:59:23,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:59:23,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:59:23,192 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:59:23,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2ff4855d3411c2183b4955db69fb0d32886e02ca6014c3e616f77788a55bdc3 [2021-12-15 11:59:23,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:59:23,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:59:23,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:59:23,503 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:59:23,504 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:59:23,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_3_6.i [2021-12-15 11:59:23,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca87b1d94/8b2f44318b31431589a9b7500ec77f77/FLAG63245e672 [2021-12-15 11:59:23,931 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:59:23,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_3_6.i [2021-12-15 11:59:23,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca87b1d94/8b2f44318b31431589a9b7500ec77f77/FLAG63245e672 [2021-12-15 11:59:23,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca87b1d94/8b2f44318b31431589a9b7500ec77f77 [2021-12-15 11:59:23,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:59:23,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:59:23,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:59:23,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:59:23,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:59:23,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:59:23" (1/1) ... [2021-12-15 11:59:23,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3093f143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:23, skipping insertion in model container [2021-12-15 11:59:23,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:59:23" (1/1) ... [2021-12-15 11:59:23,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:59:23,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:59:24,107 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_6.i[1224,1237] [2021-12-15 11:59:24,160 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_6.i[2848,2861] [2021-12-15 11:59:24,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:59:24,173 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:59:24,189 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_6.i[1224,1237] [2021-12-15 11:59:24,210 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_6.i[2848,2861] [2021-12-15 11:59:24,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:59:24,221 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:59:24,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:24 WrapperNode [2021-12-15 11:59:24,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:59:24,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:59:24,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:59:24,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:59:24,227 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 11:59:24,241 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 11:59:24,260 INFO L137 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 74 [2021-12-15 11:59:24,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:59:24,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:59:24,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:59:24,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:59:24,267 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 11:59:24,267 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 11:59:24,270 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 11:59:24,270 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 11:59:24,286 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 11:59:24,291 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 11:59:24,293 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 11:59:24,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:59:24,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:59:24,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:59:24,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:59:24,301 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 11:59:24,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:59:24,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:59:24,335 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 11:59:24,355 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 11:59:24,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:59:24,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:59:24,366 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-15 11:59:24,366 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-15 11:59:24,366 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-15 11:59:24,366 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-15 11:59:24,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:59:24,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:59:24,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 11:59:24,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 11:59:24,416 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:59:24,417 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:59:33,372 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:59:33,377 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:59:33,382 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:59:33,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:59:33 BoogieIcfgContainer [2021-12-15 11:59:33,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:59:33,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:59:33,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:59:33,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:59:33,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:59:23" (1/3) ... [2021-12-15 11:59:33,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f19eb7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:59:33, skipping insertion in model container [2021-12-15 11:59:33,389 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 11:59:33,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f19eb7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:59:33, skipping insertion in model container [2021-12-15 11:59:33,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:59:33" (3/3) ... [2021-12-15 11:59:33,390 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_3_6.i [2021-12-15 11:59:33,394 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:59:33,394 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:59:33,423 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:59:33,427 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 11:59:33,427 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:59:33,437 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 11:59:33,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 11:59:33,440 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:59:33,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:59:33,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:59:33,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:59:33,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1780387208, now seen corresponding path program 1 times [2021-12-15 11:59:33,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:59:33,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114756860] [2021-12-15 11:59:33,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:59:33,453 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:59:33,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:59:33,455 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 11:59:33,456 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 11:59:33,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 11:59:33,680 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 11:59:33,681 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 11:59:33,685 INFO L158 Benchmark]: Toolchain (without parser) took 9730.07ms. Allocated memory is still 88.1MB. Free memory was 66.5MB in the beginning and 45.7MB in the end (delta: 20.9MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2021-12-15 11:59:33,685 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory was 35.2MB in the beginning and 35.1MB in the end (delta: 48.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:59:33,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.70ms. Allocated memory is still 88.1MB. Free memory was 66.3MB in the beginning and 69.0MB in the end (delta: -2.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 11:59:33,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.52ms. Allocated memory is still 88.1MB. Free memory was 69.0MB in the beginning and 67.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:59:33,686 INFO L158 Benchmark]: Boogie Preprocessor took 38.24ms. Allocated memory is still 88.1MB. Free memory was 67.3MB in the beginning and 65.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:59:33,702 INFO L158 Benchmark]: RCFGBuilder took 9084.10ms. Allocated memory is still 88.1MB. Free memory was 65.8MB in the beginning and 54.5MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 11:59:33,702 INFO L158 Benchmark]: TraceAbstraction took 298.46ms. Allocated memory is still 88.1MB. Free memory was 54.0MB in the beginning and 45.7MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:59:33,704 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory was 35.2MB in the beginning and 35.1MB in the end (delta: 48.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.70ms. Allocated memory is still 88.1MB. Free memory was 66.3MB in the beginning and 69.0MB in the end (delta: -2.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.52ms. Allocated memory is still 88.1MB. Free memory was 69.0MB in the beginning and 67.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.24ms. Allocated memory is still 88.1MB. Free memory was 67.3MB in the beginning and 65.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 9084.10ms. Allocated memory is still 88.1MB. Free memory was 65.8MB in the beginning and 54.5MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 298.46ms. Allocated memory is still 88.1MB. Free memory was 54.0MB in the beginning and 45.7MB 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 11:59:33,843 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