/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=NARROWEST --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-newlib/double_req_bl_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:19:08,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:19:08,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:19:08,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:19:08,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:19:08,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:19:08,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:19:08,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:19:08,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:19:08,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:19:08,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:19:08,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:19:08,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:19:08,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:19:08,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:19:08,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:19:08,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:19:08,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:19:08,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:19:08,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:19:08,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:19:08,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:19:08,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:19:08,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:19:08,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:19:08,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:19:08,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:19:08,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:19:08,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:19:08,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:19:08,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:19:08,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:19:08,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:19:08,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:19:08,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:19:08,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:19:08,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:19:08,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:19:08,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:19:08,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:19:08,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:19:08,305 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 [2020-10-13 10:19:08,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:19:08,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:19:08,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:19:08,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:19:08,336 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:19:08,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:19:08,337 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:19:08,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:19:08,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:19:08,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:19:08,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:19:08,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:19:08,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:19:08,338 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:19:08,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:19:08,339 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:19:08,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:19:08,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:19:08,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:19:08,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:19:08,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:19:08,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:19:08,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:19:08,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:19:08,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:19:08,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:19:08,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:19:08,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:19:08,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:19:08,341 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:19:08,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:19:08,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:19:08,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:19:08,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:19:08,677 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:19:08,677 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-10-13 10:19:08,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b32c0883/9d1bb9ca3bc441309b1940acd7c0ea39/FLAG04a8b0dca [2020-10-13 10:19:09,196 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:19:09,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-10-13 10:19:09,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b32c0883/9d1bb9ca3bc441309b1940acd7c0ea39/FLAG04a8b0dca [2020-10-13 10:19:09,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b32c0883/9d1bb9ca3bc441309b1940acd7c0ea39 [2020-10-13 10:19:09,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:19:09,573 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:19:09,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:09,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:19:09,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:19:09,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:09" (1/1) ... [2020-10-13 10:19:09,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be095dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09, skipping insertion in model container [2020-10-13 10:19:09,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:09" (1/1) ... [2020-10-13 10:19:09,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:19:09,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:19:09,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:09,829 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:19:09,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:09,974 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:19:09,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09 WrapperNode [2020-10-13 10:19:09,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:09,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:19:09,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:19:09,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:19:09,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (1/1) ... [2020-10-13 10:19:09,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (1/1) ... [2020-10-13 10:19:09,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (1/1) ... [2020-10-13 10:19:09,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (1/1) ... [2020-10-13 10:19:10,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (1/1) ... [2020-10-13 10:19:10,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (1/1) ... [2020-10-13 10:19:10,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (1/1) ... [2020-10-13 10:19:10,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:19:10,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:19:10,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:19:10,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:19:10,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (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 [2020-10-13 10:19:10,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:19:10,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:19:10,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-10-13 10:19:10,080 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-10-13 10:19:10,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-13 10:19:10,080 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:19:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:19:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-13 10:19:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-10-13 10:19:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:19:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:19:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:19:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:19:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-10-13 10:19:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-13 10:19:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:19:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:19:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:19:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:19:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:19:10,393 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:19:10,393 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-13 10:19:10,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:10 BoogieIcfgContainer [2020-10-13 10:19:10,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:19:10,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:19:10,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:19:10,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:19:10,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:19:09" (1/3) ... [2020-10-13 10:19:10,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3eadfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:10, skipping insertion in model container [2020-10-13 10:19:10,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:09" (2/3) ... [2020-10-13 10:19:10,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3eadfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:10, skipping insertion in model container [2020-10-13 10:19:10,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:10" (3/3) ... [2020-10-13 10:19:10,408 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2020-10-13 10:19:10,420 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:19:10,428 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:19:10,445 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:19:10,474 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:19:10,474 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:19:10,474 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:19:10,474 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:19:10,474 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:19:10,475 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:19:10,475 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:19:10,475 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:19:10,497 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-13 10:19:10,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 10:19:10,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:10,504 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, 1, 1] [2020-10-13 10:19:10,505 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:10,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:10,511 INFO L82 PathProgramCache]: Analyzing trace with hash -592398611, now seen corresponding path program 1 times [2020-10-13 10:19:10,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:10,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776672681] [2020-10-13 10:19:10,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:10,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:10,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:10,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 10:19:10,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:19:10,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-13 10:19:10,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:19:10,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:10,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:19:10,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:19:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:10,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:10,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:10,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:10,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:10,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:19:10,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:10,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:10,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:10,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 10:19:11,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:19:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:11,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:11,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:11,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:11,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:19:11,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:19:11,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 10:19:11,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 10:19:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:11,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:11,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:19:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:11,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:11,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:11,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:19:11,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:11,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:19:11,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:11,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:11,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:19:11,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:11,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:19:11,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776672681] [2020-10-13 10:19:11,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:19:11,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:19:11,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626426185] [2020-10-13 10:19:11,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:19:11,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:19:11,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:19:11,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:19:11,197 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-13 10:19:11,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:19:11,393 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-10-13 10:19:11,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:19:11,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-13 10:19:11,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:19:11,406 INFO L225 Difference]: With dead ends: 79 [2020-10-13 10:19:11,406 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 10:19:11,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:19:11,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 10:19:11,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-13 10:19:11,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-13 10:19:11,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-10-13 10:19:11,455 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-10-13 10:19:11,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:19:11,458 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-10-13 10:19:11,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:19:11,458 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-10-13 10:19:11,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 10:19:11,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:11,461 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, 1, 1, 1] [2020-10-13 10:19:11,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:19:11,462 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:11,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:11,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1646954013, now seen corresponding path program 1 times [2020-10-13 10:19:11,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:11,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923637931] [2020-10-13 10:19:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:11,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:11,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:11,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:19:11,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:11,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 10:19:11,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:11,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:19:11,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:19:11,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:19:11,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:11,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:19:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:11,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:11,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:11,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:11,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:19:11,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:11,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:11,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:19:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:11,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:11,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:11,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:19:11,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:11,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 10:19:11,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:11,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:19:11,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 10:19:11,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:19:11,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:11,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:19:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:11,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:11,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:11,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:19:11,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:11,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 10:19:11,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:11,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:19:11,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:11,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:19:11,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:11,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:19:11,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923637931] [2020-10-13 10:19:11,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:19:11,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:19:11,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473096725] [2020-10-13 10:19:11,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:19:11,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:19:11,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:19:11,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:19:11,784 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-10-13 10:19:12,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:19:12,012 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-10-13 10:19:12,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:19:12,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-13 10:19:12,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:19:12,016 INFO L225 Difference]: With dead ends: 59 [2020-10-13 10:19:12,017 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 10:19:12,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:19:12,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 10:19:12,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-13 10:19:12,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 10:19:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-13 10:19:12,031 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-10-13 10:19:12,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:19:12,032 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-13 10:19:12,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:19:12,032 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-13 10:19:12,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:19:12,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:12,034 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, 1, 1, 1, 1] [2020-10-13 10:19:12,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:19:12,034 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:12,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:12,035 INFO L82 PathProgramCache]: Analyzing trace with hash 402536752, now seen corresponding path program 1 times [2020-10-13 10:19:12,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:12,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104149715] [2020-10-13 10:19:12,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:12,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:12,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:12,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:19:12,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:12,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 10:19:12,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:19:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 10:19:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:19:12,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:12,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:19:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:12,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:12,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:12,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:12,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:12,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:19:12,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:12,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:12,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:12,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:12,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:12,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:19:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:12,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:12,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:12,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:19:12,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:12,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 10:19:12,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:12,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:19:12,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:19:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:19:12,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 10:19:12,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:19:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:12,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:12,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:12,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:19:12,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:12,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 10:19:12,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:19:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:19:12,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:19:12,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104149715] [2020-10-13 10:19:12,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:19:12,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:19:12,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812211109] [2020-10-13 10:19:12,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:19:12,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:19:12,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:19:12,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:19:12,331 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-10-13 10:19:12,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:19:12,607 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-13 10:19:12,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:19:12,609 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-13 10:19:12,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:19:12,610 INFO L225 Difference]: With dead ends: 63 [2020-10-13 10:19:12,610 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 10:19:12,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:19:12,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 10:19:12,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-13 10:19:12,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 10:19:12,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-13 10:19:12,628 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 24 [2020-10-13 10:19:12,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:19:12,628 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-13 10:19:12,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:19:12,629 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-13 10:19:12,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 10:19:12,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:12,633 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, 1, 1, 1, 1, 1] [2020-10-13 10:19:12,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:19:12,634 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:12,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:12,634 INFO L82 PathProgramCache]: Analyzing trace with hash 914370183, now seen corresponding path program 1 times [2020-10-13 10:19:12,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:12,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314285749] [2020-10-13 10:19:12,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:12,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:12,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:12,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 10:19:12,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:12,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 10:19:12,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:12,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:19:12,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 10:19:12,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:19:12,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:12,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:19:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:12,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:12,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:12,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:12,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:12,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:19:12,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:12,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:12,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:12,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:12,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:12,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:19:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:12,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:12,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:12,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 10:19:12,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:12,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 10:19:12,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:19:12,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:19:12,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:19:12,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:12,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:19:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:12,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:12,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:12,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:19:12,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:12,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 10:19:12,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:12,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:19:12,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:12,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:19:12,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:12,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:19:12,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314285749] [2020-10-13 10:19:12,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:19:12,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:19:12,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159106372] [2020-10-13 10:19:12,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:19:12,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:19:12,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:19:12,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:19:12,845 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-10-13 10:19:13,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:19:13,055 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-10-13 10:19:13,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:19:13,056 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-13 10:19:13,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:19:13,058 INFO L225 Difference]: With dead ends: 67 [2020-10-13 10:19:13,058 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 10:19:13,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:19:13,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 10:19:13,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2020-10-13 10:19:13,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 10:19:13,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-13 10:19:13,067 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 25 [2020-10-13 10:19:13,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:19:13,068 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-13 10:19:13,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:19:13,068 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-13 10:19:13,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 10:19:13,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:13,069 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, 1, 1, 1, 1, 1, 1] [2020-10-13 10:19:13,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:19:13,070 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:13,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:13,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1003466516, now seen corresponding path program 1 times [2020-10-13 10:19:13,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:13,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616325898] [2020-10-13 10:19:13,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:13,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:13,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:13,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 10:19:13,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:13,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 10:19:13,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:19:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 10:19:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:19:13,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:19:13,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:19:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:13,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:13,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:13,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:13,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:13,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:19:13,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:13,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:13,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:13,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:13,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:19:13,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:19:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:13,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:13,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:13,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:19:13,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:13,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 10:19:13,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:13,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:19:13,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:19:13,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:19:13,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:13,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:19:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:13,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:13,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:13,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 10:19:13,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:13,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 10:19:13,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:13,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:19:13,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:13,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:19:13,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:13,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:19:13,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616325898] [2020-10-13 10:19:13,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:19:13,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:19:13,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151906861] [2020-10-13 10:19:13,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:19:13,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:19:13,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:19:13,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:19:13,382 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-10-13 10:19:13,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:19:13,572 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-13 10:19:13,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:19:13,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-13 10:19:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:19:13,574 INFO L225 Difference]: With dead ends: 63 [2020-10-13 10:19:13,574 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 10:19:13,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:19:13,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 10:19:13,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-13 10:19:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 10:19:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-13 10:19:13,582 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-10-13 10:19:13,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:19:13,582 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-13 10:19:13,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:19:13,582 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-13 10:19:13,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 10:19:13,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:13,584 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, 1, 1, 1, 1, 1, 1] [2020-10-13 10:19:13,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:19:13,584 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:13,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:13,585 INFO L82 PathProgramCache]: Analyzing trace with hash -793484843, now seen corresponding path program 1 times [2020-10-13 10:19:13,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:13,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036710335] [2020-10-13 10:19:13,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:19:13,595 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:19:13,596 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:19:13,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:19:13,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:19:13 BoogieIcfgContainer [2020-10-13 10:19:13,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:19:13,621 INFO L168 Benchmark]: Toolchain (without parser) took 4048.07 ms. Allocated memory was 145.8 MB in the beginning and 248.5 MB in the end (delta: 102.8 MB). Free memory was 100.9 MB in the beginning and 182.1 MB in the end (delta: -81.2 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:13,622 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:19:13,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.91 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 100.7 MB in the beginning and 179.8 MB in the end (delta: -79.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:13,624 INFO L168 Benchmark]: Boogie Preprocessor took 44.22 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 177.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:13,625 INFO L168 Benchmark]: RCFGBuilder took 379.64 ms. Allocated memory is still 201.9 MB. Free memory was 177.1 MB in the beginning and 156.8 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:13,626 INFO L168 Benchmark]: TraceAbstraction took 3218.17 ms. Allocated memory was 201.9 MB in the beginning and 248.5 MB in the end (delta: 46.7 MB). Free memory was 156.8 MB in the beginning and 182.1 MB in the end (delta: -25.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:13,630 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 400.91 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 100.7 MB in the beginning and 179.8 MB in the end (delta: -79.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.22 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 177.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 379.64 ms. Allocated memory is still 201.9 MB. Free memory was 177.1 MB in the beginning and 156.8 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3218.17 ms. Allocated memory was 201.9 MB in the beginning and 248.5 MB in the end (delta: 46.7 MB). Free memory was 156.8 MB in the beginning and 182.1 MB in the end (delta: -25.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 79. Possible FailurePath: [L79] double x = -0.0; [L80] double y = 0.0; [L81] CALL, EXPR fmax_double(x, y) [L52] CALL, EXPR __fpclassify_double(x) [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; [L52] RET, EXPR __fpclassify_double(x) [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; [L81] RET, EXPR fmax_double(x, y) [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 207 SDtfs, 191 SDslu, 81 SDs, 0 SdLazy, 577 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 7378 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...