/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=DEEPEST --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/filter2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:39:21,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:39:21,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:39:21,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:39:21,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:39:21,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:39:21,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:39:21,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:39:21,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:39:21,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:39:21,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:39:21,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:39:21,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:39:21,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:39:21,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:39:21,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:39:21,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:39:21,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:39:21,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:39:21,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:39:21,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:39:21,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:39:21,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:39:21,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:39:21,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:39:21,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:39:21,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:39:21,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:39:21,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:39:21,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:39:21,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:39:21,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:39:21,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:39:21,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:39:21,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:39:21,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:39:21,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:39:21,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:39:21,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:39:21,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:39:21,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:39:21,228 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 [2020-10-27 19:39:21,255 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:39:21,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:39:21,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:39:21,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:39:21,258 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:39:21,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:39:21,258 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:39:21,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:39:21,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:39:21,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:39:21,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:39:21,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:39:21,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:39:21,260 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:39:21,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:39:21,261 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:39:21,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:39:21,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:39:21,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:39:21,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:39:21,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:39:21,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:39:21,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:39:21,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:39:21,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:39:21,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:39:21,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:39:21,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:39:21,264 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:39:21,264 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:39:21,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:39:21,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:39:21,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:39:21,744 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:39:21,744 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:39:21,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/filter2.c [2020-10-27 19:39:21,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8028a3607/1263c0fc038c4dcdbfddf5e230a890da/FLAG6e93925b6 [2020-10-27 19:39:22,403 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:39:22,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/filter2.c [2020-10-27 19:39:22,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8028a3607/1263c0fc038c4dcdbfddf5e230a890da/FLAG6e93925b6 [2020-10-27 19:39:22,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8028a3607/1263c0fc038c4dcdbfddf5e230a890da [2020-10-27 19:39:22,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:39:22,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:39:22,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:39:22,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:39:22,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:39:22,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:39:22" (1/1) ... [2020-10-27 19:39:22,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57bc2cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:22, skipping insertion in model container [2020-10-27 19:39:22,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:39:22" (1/1) ... [2020-10-27 19:39:22,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:39:22,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:39:22,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:39:23,010 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:39:23,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:39:23,048 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:39:23,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:23 WrapperNode [2020-10-27 19:39:23,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:39:23,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:39:23,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:39:23,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:39:23,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:23" (1/1) ... [2020-10-27 19:39:23,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:23" (1/1) ... [2020-10-27 19:39:23,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:23" (1/1) ... [2020-10-27 19:39:23,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:23" (1/1) ... [2020-10-27 19:39:23,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:23" (1/1) ... [2020-10-27 19:39:23,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:23" (1/1) ... [2020-10-27 19:39:23,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:23" (1/1) ... [2020-10-27 19:39:23,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:39:23,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:39:23,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:39:23,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:39:23,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:23" (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 [2020-10-27 19:39:23,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:39:23,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:39:23,173 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:39:23,173 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 19:39:23,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 19:39:23,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:39:23,173 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:39:23,174 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:39:23,174 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:39:23,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:39:23,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-27 19:39:23,174 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 19:39:23,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 19:39:23,175 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:39:23,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:39:23,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:39:23,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:39:23,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:39:23,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:39:23,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:39:23,668 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:39:23,669 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:39:23,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:39:23 BoogieIcfgContainer [2020-10-27 19:39:23,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:39:23,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:39:23,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:39:23,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:39:23,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:39:22" (1/3) ... [2020-10-27 19:39:23,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8ce251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:39:23, skipping insertion in model container [2020-10-27 19:39:23,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:23" (2/3) ... [2020-10-27 19:39:23,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8ce251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:39:23, skipping insertion in model container [2020-10-27 19:39:23,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:39:23" (3/3) ... [2020-10-27 19:39:23,685 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2.c [2020-10-27 19:39:23,704 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:39:23,709 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:39:23,724 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:39:23,768 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:39:23,769 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:39:23,769 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:39:23,783 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:39:23,783 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:39:23,783 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:39:23,783 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:39:23,784 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:39:23,814 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-27 19:39:23,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 19:39:23,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:39:23,824 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:39:23,824 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:39:23,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:39:23,851 INFO L82 PathProgramCache]: Analyzing trace with hash -442816756, now seen corresponding path program 1 times [2020-10-27 19:39:23,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:39:23,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865472816] [2020-10-27 19:39:23,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:39:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:39:24,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:39:24,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:39:24,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:39:24,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:39:24,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 19:39:24,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:39:24,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-27 19:39:24,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:39:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:39:24,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 19:39:24,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:39:24,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:39:24,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:39:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:39:24,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:39:24,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:39:24,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:39:24,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:39:24,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:39:24,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:39:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:39:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:39:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:39:24,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:39:24,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:39:24,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:39:24,554 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 [2020-10-27 19:39:24,560 INFO L168 Benchmark]: Toolchain (without parser) took 1785.16 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 106.8 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:39:24,561 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:39:24,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.27 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:39:24,563 INFO L168 Benchmark]: Boogie Preprocessor took 41.48 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:39:24,564 INFO L168 Benchmark]: RCFGBuilder took 578.95 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 100.1 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:39:24,565 INFO L168 Benchmark]: TraceAbstraction took 881.90 ms. Allocated memory is still 151.0 MB. Free memory was 99.7 MB in the beginning and 106.8 MB in the end (delta: -7.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:39:24,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 269.27 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.48 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 578.95 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 100.1 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 881.90 ms. Allocated memory is still 151.0 MB. Free memory was 99.7 MB in the beginning and 106.8 MB in the end (delta: -7.1 MB). There was no memory consumed. 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...