/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-benchs/rlim_exit.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:04:41,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:04:41,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:04:41,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:04:41,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:04:41,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:04:41,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:04:41,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:04:41,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:04:41,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:04:41,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:04:41,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:04:41,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:04:41,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:04:41,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:04:41,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:04:41,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:04:41,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:04:41,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:04:41,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:04:41,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:04:41,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:04:41,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:04:41,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:04:41,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:04:41,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:04:41,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:04:41,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:04:41,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:04:41,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:04:41,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:04:41,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:04:41,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:04:41,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:04:41,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:04:41,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:04:41,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:04:41,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:04:41,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:04:41,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:04:41,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:04:41,369 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:04:41,395 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:04:41,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:04:41,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:04:41,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:04:41,397 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:04:41,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:04:41,398 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:04:41,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:04:41,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:04:41,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:04:41,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:04:41,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:04:41,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:04:41,399 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:04:41,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:04:41,399 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:04:41,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:04:41,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:04:41,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:04:41,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:04:41,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:04:41,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:04:41,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:04:41,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:04:41,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:04:41,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:04:41,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:04:41,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:04:41,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:04:41,405 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:04:41,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:04:41,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:04:41,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:04:41,863 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:04:41,865 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:04:41,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/rlim_exit.c [2020-10-29 09:04:41,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/040d143af/0752c99581a54d85997b3f0cd2393154/FLAG46ff789c8 [2020-10-29 09:04:42,568 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:04:42,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/rlim_exit.c [2020-10-29 09:04:42,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/040d143af/0752c99581a54d85997b3f0cd2393154/FLAG46ff789c8 [2020-10-29 09:04:42,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/040d143af/0752c99581a54d85997b3f0cd2393154 [2020-10-29 09:04:42,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:04:42,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:04:42,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:04:42,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:04:42,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:04:42,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:04:42" (1/1) ... [2020-10-29 09:04:42,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b44cadd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:04:42, skipping insertion in model container [2020-10-29 09:04:42,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:04:42" (1/1) ... [2020-10-29 09:04:42,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:04:42,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:04:43,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:04:43,216 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:04:43,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:04:43,253 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:04:43,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:04:43 WrapperNode [2020-10-29 09:04:43,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:04:43,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:04:43,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:04:43,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:04:43,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:04:43" (1/1) ... [2020-10-29 09:04:43,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:04:43" (1/1) ... [2020-10-29 09:04:43,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:04:43" (1/1) ... [2020-10-29 09:04:43,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:04:43" (1/1) ... [2020-10-29 09:04:43,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:04:43" (1/1) ... [2020-10-29 09:04:43,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:04:43" (1/1) ... [2020-10-29 09:04:43,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:04:43" (1/1) ... [2020-10-29 09:04:43,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:04:43,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:04:43,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:04:43,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:04:43,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:04:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:04:43,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:04:43,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:04:43,366 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:04:43,366 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 09:04:43,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:04:43,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:04:43,367 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:04:43,367 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:04:43,367 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:04:43,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:04:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:04:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 09:04:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:04:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:04:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:04:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:04:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:04:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:04:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:04:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:04:43,648 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:04:43,649 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 09:04:43,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:04:43 BoogieIcfgContainer [2020-10-29 09:04:43,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:04:43,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:04:43,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:04:43,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:04:43,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:04:42" (1/3) ... [2020-10-29 09:04:43,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2dda53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:04:43, skipping insertion in model container [2020-10-29 09:04:43,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:04:43" (2/3) ... [2020-10-29 09:04:43,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2dda53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:04:43, skipping insertion in model container [2020-10-29 09:04:43,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:04:43" (3/3) ... [2020-10-29 09:04:43,668 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_exit.c [2020-10-29 09:04:43,696 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:04:43,706 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:04:43,727 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:04:43,757 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:04:43,757 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:04:43,758 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:04:43,758 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:04:43,758 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:04:43,758 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:04:43,758 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:04:43,758 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:04:43,777 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-29 09:04:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-29 09:04:43,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:04:43,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:04:43,784 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:04:43,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:04:43,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1752678665, now seen corresponding path program 1 times [2020-10-29 09:04:43,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:04:43,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027590293] [2020-10-29 09:04:43,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:04:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:04:44,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:04:44,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:04:44,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:04:44,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:04:44,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-29 09:04:44,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:04:44,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:04:44,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:04:44,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:04:44,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:04:44,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:04:44,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:04:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:04:44,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:04:44,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:04:44,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:04:44,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:04:44,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:04:44,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:04:44,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:04:44,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:04:44,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:04:44,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:04:44,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:04:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:04:44,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027590293] [2020-10-29 09:04:44,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:04:44,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:04:44,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784959362] [2020-10-29 09:04:44,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:04:44,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:04:44,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:04:44,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:04:44,403 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2020-10-29 09:04:44,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:04:44,620 INFO L93 Difference]: Finished difference Result 64 states and 88 transitions. [2020-10-29 09:04:44,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:04:44,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-29 09:04:44,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:04:44,631 INFO L225 Difference]: With dead ends: 64 [2020-10-29 09:04:44,631 INFO L226 Difference]: Without dead ends: 30 [2020-10-29 09:04:44,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:04:44,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-29 09:04:44,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2020-10-29 09:04:44,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-29 09:04:44,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-29 09:04:44,709 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 12 [2020-10-29 09:04:44,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:04:44,710 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-29 09:04:44,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:04:44,711 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-29 09:04:44,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 09:04:44,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:04:44,713 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:04:44,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:04:44,714 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:04:44,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:04:44,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1638453249, now seen corresponding path program 1 times [2020-10-29 09:04:44,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:04:44,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092124401] [2020-10-29 09:04:44,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:04:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:04:44,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:04:44,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:04:44,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 09:04:44,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:04:44,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 09:04:44,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:04:44,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:04:44,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:04:44,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:04:44,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:04:44,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:04:44,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:04:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:04:44,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:04:44,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:04:44,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:04:44,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:04:44,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:04:44,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:04:44,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:04:44,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:04:44,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:04:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:04:44,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:04:44,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:04:44,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:04:44,997 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:235) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:378) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) 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:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.logic.NoopScript.annotate(NoopScript.java:557) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertCodeBlocks.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertLocalVarAssignemntPendingContext(AnnotateAndAssertCodeBlocks.java:169) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:120) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:295) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:206) ... 30 more [2020-10-29 09:04:45,007 INFO L168 Benchmark]: Toolchain (without parser) took 2086.35 ms. Allocated memory is still 164.6 MB. Free memory was 140.0 MB in the beginning and 83.0 MB in the end (delta: 56.9 MB). Peak memory consumption was 58.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:04:45,008 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 164.6 MB. Free memory was 137.8 MB in the beginning and 137.7 MB in the end (delta: 107.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:04:45,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.50 ms. Allocated memory is still 164.6 MB. Free memory was 139.3 MB in the beginning and 129.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:04:45,012 INFO L168 Benchmark]: Boogie Preprocessor took 39.29 ms. Allocated memory is still 164.6 MB. Free memory was 129.8 MB in the beginning and 128.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:04:45,015 INFO L168 Benchmark]: RCFGBuilder took 355.78 ms. Allocated memory is still 164.6 MB. Free memory was 128.2 MB in the beginning and 114.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:04:45,016 INFO L168 Benchmark]: TraceAbstraction took 1348.98 ms. Allocated memory is still 164.6 MB. Free memory was 113.7 MB in the beginning and 83.0 MB in the end (delta: 30.7 MB). Peak memory consumption was 32.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:04:45,023 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 164.6 MB. Free memory was 137.8 MB in the beginning and 137.7 MB in the end (delta: 107.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 326.50 ms. Allocated memory is still 164.6 MB. Free memory was 139.3 MB in the beginning and 129.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.29 ms. Allocated memory is still 164.6 MB. Free memory was 129.8 MB in the beginning and 128.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 355.78 ms. Allocated memory is still 164.6 MB. Free memory was 128.2 MB in the beginning and 114.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1348.98 ms. Allocated memory is still 164.6 MB. Free memory was 113.7 MB in the beginning and 83.0 MB in the end (delta: 30.7 MB). Peak memory consumption was 32.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:235) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...