./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eeab39c4b0b140806b3ddcf9e96fb8e36f66c5baac57da41aaf4e88167e6b080 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:03:00,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:03:00,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:03:00,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:03:00,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:03:00,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:03:00,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:03:00,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:03:00,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:03:00,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:03:00,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:03:00,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:03:00,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:03:00,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:03:00,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:03:00,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:03:00,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:03:00,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:03:00,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:03:00,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:03:00,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:03:00,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:03:00,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:03:00,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:03:00,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:03:00,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:03:00,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:03:00,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:03:00,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:03:00,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:03:00,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:03:00,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:03:00,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:03:00,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:03:00,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:03:00,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:03:00,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:03:00,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:03:00,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:03:00,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:03:00,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:03:00,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:03:00,399 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:03:00,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:03:00,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:03:00,400 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:03:00,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:03:00,401 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:03:00,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:03:00,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:03:00,402 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:03:00,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:03:00,403 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:03:00,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:03:00,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:03:00,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:03:00,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:03:00,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:03:00,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:03:00,404 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:03:00,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:03:00,405 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:03:00,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:03:00,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:03:00,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:03:00,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:03:00,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:03:00,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:03:00,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:03:00,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:03:00,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:03:00,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:03:00,408 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:03:00,408 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:03:00,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:03:00,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:03:00,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eeab39c4b0b140806b3ddcf9e96fb8e36f66c5baac57da41aaf4e88167e6b080 [2021-12-15 11:03:00,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:03:00,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:03:00,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:03:00,653 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:03:00,653 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:03:00,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound1.c [2021-12-15 11:03:00,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/129c84135/0ed2c7a8bde34a93a1f4f4b46b90bfd1/FLAG3c4de65d2 [2021-12-15 11:03:01,106 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:03:01,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound1.c [2021-12-15 11:03:01,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/129c84135/0ed2c7a8bde34a93a1f4f4b46b90bfd1/FLAG3c4de65d2 [2021-12-15 11:03:01,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/129c84135/0ed2c7a8bde34a93a1f4f4b46b90bfd1 [2021-12-15 11:03:01,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:03:01,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:03:01,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:03:01,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:03:01,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:03:01,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:03:01" (1/1) ... [2021-12-15 11:03:01,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2890683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:01, skipping insertion in model container [2021-12-15 11:03:01,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:03:01" (1/1) ... [2021-12-15 11:03:01,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:03:01,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:03:01,283 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound1.c[454,467] [2021-12-15 11:03:01,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:03:01,299 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:03:01,308 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound1.c[454,467] [2021-12-15 11:03:01,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:03:01,322 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:03:01,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:01 WrapperNode [2021-12-15 11:03:01,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:03:01,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:03:01,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:03:01,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:03:01,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:01" (1/1) ... [2021-12-15 11:03:01,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:01" (1/1) ... [2021-12-15 11:03:01,355 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2021-12-15 11:03:01,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:03:01,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:03:01,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:03:01,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:03:01,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:01" (1/1) ... [2021-12-15 11:03:01,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:01" (1/1) ... [2021-12-15 11:03:01,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:01" (1/1) ... [2021-12-15 11:03:01,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:01" (1/1) ... [2021-12-15 11:03:01,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:01" (1/1) ... [2021-12-15 11:03:01,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:01" (1/1) ... [2021-12-15 11:03:01,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:01" (1/1) ... [2021-12-15 11:03:01,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:03:01,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:03:01,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:03:01,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:03:01,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:01" (1/1) ... [2021-12-15 11:03:01,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:03:01,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:03:01,404 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 11:03:01,419 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 11:03:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:03:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:03:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:03:01,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:03:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 11:03:01,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 11:03:01,478 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:03:01,479 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:03:01,568 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:03:01,575 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:03:01,575 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:03:01,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:03:01 BoogieIcfgContainer [2021-12-15 11:03:01,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:03:01,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:03:01,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:03:01,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:03:01,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:03:01" (1/3) ... [2021-12-15 11:03:01,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330fa73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:03:01, skipping insertion in model container [2021-12-15 11:03:01,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:01" (2/3) ... [2021-12-15 11:03:01,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330fa73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:03:01, skipping insertion in model container [2021-12-15 11:03:01,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:03:01" (3/3) ... [2021-12-15 11:03:01,583 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll_unwindbound1.c [2021-12-15 11:03:01,587 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:03:01,588 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:03:01,646 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:03:01,656 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 11:03:01,657 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:03:01,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 11:03:01,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 11:03:01,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:03:01,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:03:01,688 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:03:01,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:03:01,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2021-12-15 11:03:01,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:03:01,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071602866] [2021-12-15 11:03:01,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:03:01,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:03:01,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:03:01,752 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 11:03:01,761 INFO L158 Benchmark]: Toolchain (without parser) took 633.24ms. Allocated memory is still 94.4MB. Free memory was 61.9MB in the beginning and 49.5MB in the end (delta: 12.3MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2021-12-15 11:03:01,762 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 94.4MB. Free memory was 50.0MB in the beginning and 49.9MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:03:01,764 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.59ms. Allocated memory is still 94.4MB. Free memory was 61.7MB in the beginning and 69.9MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:03:01,764 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.97ms. Allocated memory is still 94.4MB. Free memory was 69.9MB in the beginning and 68.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:03:01,765 INFO L158 Benchmark]: Boogie Preprocessor took 16.58ms. Allocated memory is still 94.4MB. Free memory was 68.4MB in the beginning and 67.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:03:01,766 INFO L158 Benchmark]: RCFGBuilder took 203.86ms. Allocated memory is still 94.4MB. Free memory was 67.3MB in the beginning and 58.7MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:03:01,767 INFO L158 Benchmark]: TraceAbstraction took 180.46ms. Allocated memory is still 94.4MB. Free memory was 58.4MB in the beginning and 49.5MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:03:01,776 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 94.4MB. Free memory was 50.0MB in the beginning and 49.9MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 195.59ms. Allocated memory is still 94.4MB. Free memory was 61.7MB in the beginning and 69.9MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.97ms. Allocated memory is still 94.4MB. Free memory was 69.9MB in the beginning and 68.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.58ms. Allocated memory is still 94.4MB. Free memory was 68.4MB in the beginning and 67.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 203.86ms. Allocated memory is still 94.4MB. Free memory was 67.3MB in the beginning and 58.7MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 180.46ms. Allocated memory is still 94.4MB. Free memory was 58.4MB in the beginning and 49.5MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:03:01,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eeab39c4b0b140806b3ddcf9e96fb8e36f66c5baac57da41aaf4e88167e6b080 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:03:03,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:03:03,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:03:03,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:03:03,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:03:03,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:03:03,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:03:03,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:03:03,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:03:03,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:03:03,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:03:03,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:03:03,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:03:03,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:03:03,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:03:03,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:03:03,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:03:03,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:03:03,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:03:03,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:03:03,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:03:03,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:03:03,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:03:03,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:03:03,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:03:03,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:03:03,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:03:03,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:03:03,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:03:03,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:03:03,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:03:03,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:03:03,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:03:03,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:03:03,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:03:03,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:03:03,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:03:03,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:03:03,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:03:03,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:03:03,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:03:03,780 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:03:03,800 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:03:03,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:03:03,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:03:03,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:03:03,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:03:03,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:03:03,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:03:03,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:03:03,802 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:03:03,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:03:03,803 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:03:03,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:03:03,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:03:03,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:03:03,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:03:03,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:03:03,804 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:03:03,804 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:03:03,804 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:03:03,804 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:03:03,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:03:03,805 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:03:03,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:03:03,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:03:03,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:03:03,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:03:03,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:03:03,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:03:03,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:03:03,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:03:03,824 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:03:03,825 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:03:03,825 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:03:03,825 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:03:03,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:03:03,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:03:03,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:03:03,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eeab39c4b0b140806b3ddcf9e96fb8e36f66c5baac57da41aaf4e88167e6b080 [2021-12-15 11:03:04,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:03:04,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:03:04,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:03:04,169 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:03:04,170 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:03:04,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound1.c [2021-12-15 11:03:04,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8edb4e621/c7577944cb044ceba34d30cbfe0b5698/FLAG3a54592b3 [2021-12-15 11:03:04,677 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:03:04,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound1.c [2021-12-15 11:03:04,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8edb4e621/c7577944cb044ceba34d30cbfe0b5698/FLAG3a54592b3 [2021-12-15 11:03:04,702 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8edb4e621/c7577944cb044ceba34d30cbfe0b5698 [2021-12-15 11:03:04,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:03:04,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:03:04,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:03:04,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:03:04,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:03:04,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:03:04" (1/1) ... [2021-12-15 11:03:04,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6106f7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:04, skipping insertion in model container [2021-12-15 11:03:04,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:03:04" (1/1) ... [2021-12-15 11:03:04,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:03:04,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:03:04,868 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound1.c[454,467] [2021-12-15 11:03:04,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:03:04,891 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:03:04,904 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound1.c[454,467] [2021-12-15 11:03:04,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:03:04,954 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:03:04,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:04 WrapperNode [2021-12-15 11:03:04,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:03:04,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:03:04,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:03:04,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:03:04,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:04" (1/1) ... [2021-12-15 11:03:04,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:04" (1/1) ... [2021-12-15 11:03:04,987 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2021-12-15 11:03:04,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:03:04,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:03:04,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:03:04,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:03:04,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:04" (1/1) ... [2021-12-15 11:03:04,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:04" (1/1) ... [2021-12-15 11:03:05,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:04" (1/1) ... [2021-12-15 11:03:05,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:04" (1/1) ... [2021-12-15 11:03:05,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:04" (1/1) ... [2021-12-15 11:03:05,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:04" (1/1) ... [2021-12-15 11:03:05,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:04" (1/1) ... [2021-12-15 11:03:05,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:03:05,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:03:05,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:03:05,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:03:05,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:04" (1/1) ... [2021-12-15 11:03:05,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:03:05,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:03:05,065 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 11:03:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:03:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:03:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:03:05,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:03:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 11:03:05,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 11:03:05,089 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 11:03:05,154 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:03:05,156 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:03:05,293 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:03:05,301 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:03:05,302 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:03:05,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:03:05 BoogieIcfgContainer [2021-12-15 11:03:05,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:03:05,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:03:05,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:03:05,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:03:05,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:03:04" (1/3) ... [2021-12-15 11:03:05,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342ba517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:03:05, skipping insertion in model container [2021-12-15 11:03:05,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:03:04" (2/3) ... [2021-12-15 11:03:05,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342ba517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:03:05, skipping insertion in model container [2021-12-15 11:03:05,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:03:05" (3/3) ... [2021-12-15 11:03:05,313 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll_unwindbound1.c [2021-12-15 11:03:05,317 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:03:05,317 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:03:05,365 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:03:05,373 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 11:03:05,374 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:03:05,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 11:03:05,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 11:03:05,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:03:05,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:03:05,396 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:03:05,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:03:05,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2021-12-15 11:03:05,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:03:05,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267965750] [2021-12-15 11:03:05,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:03:05,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:03:05,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:03:05,419 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 11:03:05,467 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 11:03:05,479 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 11:03:05,668 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 11:03:05,669 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 11:03:05,673 INFO L158 Benchmark]: Toolchain (without parser) took 965.65ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.6MB in the beginning and 31.3MB in the end (delta: 284.3kB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2021-12-15 11:03:05,673 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 36.6MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:03:05,674 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.77ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.4MB in the beginning and 51.0MB in the end (delta: -19.6MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-12-15 11:03:05,674 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.41ms. Allocated memory is still 67.1MB. Free memory was 51.0MB in the beginning and 49.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:03:05,675 INFO L158 Benchmark]: Boogie Preprocessor took 44.44ms. Allocated memory is still 67.1MB. Free memory was 49.5MB in the beginning and 48.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:03:05,675 INFO L158 Benchmark]: RCFGBuilder took 269.97ms. Allocated memory is still 67.1MB. Free memory was 48.3MB in the beginning and 39.6MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:03:05,676 INFO L158 Benchmark]: TraceAbstraction took 364.88ms. Allocated memory is still 67.1MB. Free memory was 39.0MB in the beginning and 31.3MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:03:05,678 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 36.6MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.77ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.4MB in the beginning and 51.0MB in the end (delta: -19.6MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.41ms. Allocated memory is still 67.1MB. Free memory was 51.0MB in the beginning and 49.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.44ms. Allocated memory is still 67.1MB. Free memory was 49.5MB in the beginning and 48.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 269.97ms. Allocated memory is still 67.1MB. Free memory was 48.3MB in the beginning and 39.6MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 364.88ms. Allocated memory is still 67.1MB. Free memory was 39.0MB in the beginning and 31.3MB in the end (delta: 7.7MB). 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 11:03:05,717 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