/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=0.2 --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 -i ../../../trunk/examples/svcomp/float-benchs/rlim_invariant.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:15:20,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:15:20,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:15:20,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:15:20,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:15:20,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:15:20,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:15:20,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:15:20,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:15:20,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:15:20,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:15:20,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:15:20,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:15:20,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:15:20,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:15:20,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:15:20,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:15:20,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:15:20,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:15:20,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:15:20,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:15:20,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:15:20,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:15:20,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:15:20,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:15:20,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:15:20,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:15:20,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:15:20,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:15:20,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:15:20,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:15:20,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:15:20,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:15:20,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:15:20,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:15:20,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:15:20,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:15:20,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:15:20,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:15:20,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:15:20,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:15:20,300 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 [2020-10-14 23:15:20,322 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:15:20,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:15:20,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:15:20,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:15:20,324 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:15:20,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:15:20,325 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:15:20,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:15:20,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:15:20,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:15:20,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:15:20,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:15:20,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:15:20,326 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:15:20,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:15:20,326 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:15:20,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:15:20,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:15:20,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:15:20,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:15:20,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:15:20,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:15:20,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:15:20,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:15:20,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:15:20,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:15:20,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:15:20,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:15:20,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:15:20,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:15:20,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:15:20,650 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:15:20,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:15:20,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:15:20,656 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:15:20,656 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2020-10-14 23:15:20,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/007cfafde/a27e1f3170d5449096b76dfaa59e42f6/FLAG9a044e131 [2020-10-14 23:15:21,111 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:15:21,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2020-10-14 23:15:21,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/007cfafde/a27e1f3170d5449096b76dfaa59e42f6/FLAG9a044e131 [2020-10-14 23:15:21,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/007cfafde/a27e1f3170d5449096b76dfaa59e42f6 [2020-10-14 23:15:21,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:15:21,549 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:15:21,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:15:21,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:15:21,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:15:21,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:15:21" (1/1) ... [2020-10-14 23:15:21,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c2d0e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:21, skipping insertion in model container [2020-10-14 23:15:21,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:15:21" (1/1) ... [2020-10-14 23:15:21,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:15:21,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:15:21,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:15:21,789 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:15:21,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:15:21,826 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:15:21,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:21 WrapperNode [2020-10-14 23:15:21,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:15:21,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:15:21,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:15:21,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:15:21,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:21" (1/1) ... [2020-10-14 23:15:21,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:21" (1/1) ... [2020-10-14 23:15:21,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:21" (1/1) ... [2020-10-14 23:15:21,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:21" (1/1) ... [2020-10-14 23:15:21,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:21" (1/1) ... [2020-10-14 23:15:21,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:21" (1/1) ... [2020-10-14 23:15:21,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:21" (1/1) ... [2020-10-14 23:15:21,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:15:21,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:15:21,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:15:21,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:15:21,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:21" (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 [2020-10-14 23:15:22,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:15:22,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:15:22,004 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 23:15:22,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:15:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:15:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 23:15:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:15:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 23:15:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 23:15:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:15:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:15:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:15:22,247 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:15:22,247 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 23:15:22,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:15:22 BoogieIcfgContainer [2020-10-14 23:15:22,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:15:22,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:15:22,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:15:22,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:15:22,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:15:21" (1/3) ... [2020-10-14 23:15:22,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fc279d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:15:22, skipping insertion in model container [2020-10-14 23:15:22,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:21" (2/3) ... [2020-10-14 23:15:22,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fc279d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:15:22, skipping insertion in model container [2020-10-14 23:15:22,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:15:22" (3/3) ... [2020-10-14 23:15:22,260 INFO L109 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.p+cfa-reducer.c [2020-10-14 23:15:22,272 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:15:22,279 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:15:22,293 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:15:22,317 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:15:22,318 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:15:22,318 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:15:22,318 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:15:22,318 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:15:22,318 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:15:22,319 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:15:22,319 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:15:22,337 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-14 23:15:22,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:15:22,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:15:22,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:15:22,346 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:15:22,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:15:22,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1437998936, now seen corresponding path program 1 times [2020-10-14 23:15:22,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:15:22,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873979664] [2020-10-14 23:15:22,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:15:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:22,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:22,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:22,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:22,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:22,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:15:22,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:15:22,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-14 23:15:22,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:22,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:22,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:15:22,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 23:15:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 23:15:22,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:15:22,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:15:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:22,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:22,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:22,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:15:22,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:22,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:15:22,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:22,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:15:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:15:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:15:22,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:15:22,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873979664] [2020-10-14 23:15:22,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:15:22,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:15:22,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243658841] [2020-10-14 23:15:22,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:15:22,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:15:22,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:15:22,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:15:22,800 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2020-10-14 23:15:23,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:15:23,109 INFO L93 Difference]: Finished difference Result 56 states and 78 transitions. [2020-10-14 23:15:23,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:15:23,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-14 23:15:23,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:15:23,122 INFO L225 Difference]: With dead ends: 56 [2020-10-14 23:15:23,122 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 23:15:23,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:15:23,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 23:15:23,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 27. [2020-10-14 23:15:23,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 23:15:23,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-10-14 23:15:23,173 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 20 [2020-10-14 23:15:23,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:15:23,173 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-14 23:15:23,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:15:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-10-14 23:15:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:15:23,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:15:23,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:15:23,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:15:23,176 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:15:23,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:15:23,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1421941587, now seen corresponding path program 1 times [2020-10-14 23:15:23,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:15:23,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442777954] [2020-10-14 23:15:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:15:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:23,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:23,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:23,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:23,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:15:23,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:15:23,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 23:15:23,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:23,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:23,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:15:23,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:15:23,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:15:23,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:23,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:15:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:23,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:23,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:23,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:15:23,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:23,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:15:23,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:23,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:23,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:15:23,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:15:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:15:23,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:23,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:15:23,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442777954] [2020-10-14 23:15:23,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:15:23,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:15:23,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090004590] [2020-10-14 23:15:23,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:15:23,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:15:23,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:15:23,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:15:23,333 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 4 states. [2020-10-14 23:15:23,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:15:23,413 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2020-10-14 23:15:23,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:15:23,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-14 23:15:23,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:15:23,415 INFO L225 Difference]: With dead ends: 49 [2020-10-14 23:15:23,415 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 23:15:23,416 INFO L675 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 [2020-10-14 23:15:23,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 23:15:23,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-14 23:15:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 23:15:23,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-10-14 23:15:23,425 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 20 [2020-10-14 23:15:23,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:15:23,426 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-10-14 23:15:23,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:15:23,426 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-10-14 23:15:23,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:15:23,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:15:23,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:15:23,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:15:23,428 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:15:23,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:15:23,429 INFO L82 PathProgramCache]: Analyzing trace with hash 985715560, now seen corresponding path program 1 times [2020-10-14 23:15:23,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:15:23,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018782806] [2020-10-14 23:15:23,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:15:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:23,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:23,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:23,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:15:23,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:23,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 23:15:23,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:23,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:15:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:15:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:15:23,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:23,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:15:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:23,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:23,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:23,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:15:23,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:23,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:15:23,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:23,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:15:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:15:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:15:23,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:15:23,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018782806] [2020-10-14 23:15:23,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:15:23,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:15:23,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472393433] [2020-10-14 23:15:23,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:15:23,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:15:23,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:15:23,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:15:23,512 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 4 states. [2020-10-14 23:15:23,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:15:23,584 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2020-10-14 23:15:23,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:15:23,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-14 23:15:23,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:15:23,586 INFO L225 Difference]: With dead ends: 47 [2020-10-14 23:15:23,586 INFO L226 Difference]: Without dead ends: 25 [2020-10-14 23:15:23,587 INFO L675 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 [2020-10-14 23:15:23,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-14 23:15:23,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-14 23:15:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-14 23:15:23,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-10-14 23:15:23,594 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2020-10-14 23:15:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:15:23,594 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-10-14 23:15:23,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:15:23,595 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-10-14 23:15:23,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:15:23,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:15:23,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:15:23,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:15:23,596 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:15:23,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:15:23,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1768376147, now seen corresponding path program 1 times [2020-10-14 23:15:23,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:15:23,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521878201] [2020-10-14 23:15:23,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:15:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:15:23,605 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:15:23,605 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:15:23,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:15:23,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:15:23 BoogieIcfgContainer [2020-10-14 23:15:23,626 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:15:23,629 INFO L168 Benchmark]: Toolchain (without parser) took 2079.61 ms. Allocated memory was 147.8 MB in the beginning and 233.8 MB in the end (delta: 86.0 MB). Free memory was 104.0 MB in the beginning and 185.6 MB in the end (delta: -81.6 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:15:23,630 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. [2020-10-14 23:15:23,631 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.21 ms. Allocated memory is still 147.8 MB. Free memory was 104.0 MB in the beginning and 93.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:15:23,632 INFO L168 Benchmark]: Boogie Preprocessor took 114.46 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 93.7 MB in the beginning and 182.7 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:15:23,633 INFO L168 Benchmark]: RCFGBuilder took 309.99 ms. Allocated memory is still 204.5 MB. Free memory was 182.7 MB in the beginning and 166.9 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:15:23,634 INFO L168 Benchmark]: TraceAbstraction took 1373.41 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 166.9 MB in the beginning and 185.6 MB in the end (delta: -18.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:15:23,638 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 277.21 ms. Allocated memory is still 147.8 MB. Free memory was 104.0 MB in the beginning and 93.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.46 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 93.7 MB in the beginning and 182.7 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 309.99 ms. Allocated memory is still 204.5 MB. Free memory was 182.7 MB in the beginning and 166.9 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1373.41 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 166.9 MB in the beginning and 185.6 MB in the end (delta: -18.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 64]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 46, overapproximation of someBinaryDOUBLEComparisonOperation at line 51, overapproximation of to_real at line 18, overapproximation of someBinaryArithmeticFLOAToperation at line 48. Possible FailurePath: [L1] int __return_main; [L12] float main__X; [L13] float main__Y; [L14] float main__S; [L15] float main__R; [L16] float main__D; [L17] int main__i; [L18] main__Y = 0 [L19] main__i = 0 [L21] COND TRUE main__i < 100000 [L23] main__X = __VERIFIER_nondet_float() [L24] main__D = __VERIFIER_nondet_float() [L25] int main____CPAchecker_TMP_0; [L26] COND TRUE main__X >= -128.0 [L28] COND TRUE main__X <= 128.0 [L30] main____CPAchecker_TMP_0 = 1 [L32] COND TRUE main____CPAchecker_TMP_0 != 0 [L34] int main____CPAchecker_TMP_1; [L35] COND TRUE main__D >= 0.0 [L37] COND TRUE main__D <= 16.0 [L39] main____CPAchecker_TMP_1 = 1 [L41] COND TRUE main____CPAchecker_TMP_1 != 0 [L43] main__S = main__Y [L44] main__Y = main__X [L45] main__R = main__X - main__S [L46] COND TRUE main__R <= (-main__D) [L48] main__Y = main__S - main__D [L50] int main____CPAchecker_TMP_2; [L51] COND FALSE !(main__Y >= -129.0) [L77] main____CPAchecker_TMP_2 = 0 [L58] int __tmp_1; [L59] __tmp_1 = main____CPAchecker_TMP_2 [L60] int __VERIFIER_assert__cond; [L61] __VERIFIER_assert__cond = __tmp_1 [L62] COND TRUE __VERIFIER_assert__cond == 0 [L64] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 122 SDtfs, 138 SDslu, 33 SDs, 0 SdLazy, 135 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 17 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 1349 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...