/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_0970a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:18:38,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:18:38,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:18:38,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:18:38,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:18:38,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:18:38,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:18:38,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:18:38,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:18:38,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:18:38,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:18:38,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:18:38,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:18:38,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:18:38,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:18:38,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:18:38,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:18:38,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:18:38,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:18:38,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:18:38,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:18:38,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:18:38,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:18:38,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:18:38,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:18:38,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:18:38,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:18:38,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:18:38,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:18:38,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:18:38,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:18:38,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:18:38,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:18:38,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:18:38,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:18:38,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:18:38,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:18:38,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:18:38,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:18:38,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:18:38,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:18:38,899 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 10:18:38,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:18:38,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:18:38,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:18:38,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:18:38,953 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:18:38,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:18:38,953 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:18:38,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:18:38,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:18:38,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:18:38,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:18:38,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:18:38,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:18:38,954 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:18:38,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:18:38,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:18:38,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:18:38,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:18:38,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:18:38,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:18:38,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:18:38,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:18:38,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:18:38,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:18:38,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:18:38,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:18:38,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:18:38,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:18:38,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:18:38,959 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 10:18:39,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:18:39,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:18:39,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:18:39,280 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:18:39,281 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:18:39,282 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0970a.c [2020-10-13 10:18:39,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04c9e4daf/4ec77ae399fa4d92b33c6f53ea8cfe4d/FLAG37977129b [2020-10-13 10:18:39,859 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:18:39,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0970a.c [2020-10-13 10:18:39,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04c9e4daf/4ec77ae399fa4d92b33c6f53ea8cfe4d/FLAG37977129b [2020-10-13 10:18:40,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04c9e4daf/4ec77ae399fa4d92b33c6f53ea8cfe4d [2020-10-13 10:18:40,195 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:18:40,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:18:40,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:40,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:18:40,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:18:40,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:40" (1/1) ... [2020-10-13 10:18:40,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1516d3a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:40, skipping insertion in model container [2020-10-13 10:18:40,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:40" (1/1) ... [2020-10-13 10:18:40,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:18:40,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:18:40,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:40,553 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:18:40,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:40,732 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:18:40,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:40 WrapperNode [2020-10-13 10:18:40,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:40,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:18:40,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:18:40,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:18:40,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:40" (1/1) ... [2020-10-13 10:18:40,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:40" (1/1) ... [2020-10-13 10:18:40,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:40" (1/1) ... [2020-10-13 10:18:40,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:40" (1/1) ... [2020-10-13 10:18:40,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:40" (1/1) ... [2020-10-13 10:18:40,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:40" (1/1) ... [2020-10-13 10:18:40,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:40" (1/1) ... [2020-10-13 10:18:40,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:18:40,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:18:40,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:18:40,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:18:40,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:40" (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 10:18:40,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:18:40,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:18:40,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log [2020-10-13 10:18:40,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log10 [2020-10-13 10:18:40,854 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-13 10:18:40,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-13 10:18:40,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:18:40,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:18:40,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-13 10:18:40,855 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log [2020-10-13 10:18:40,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:18:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:18:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:18:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:18:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:18:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:18:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log10 [2020-10-13 10:18:40,857 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-13 10:18:40,857 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-13 10:18:40,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:18:40,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:18:40,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:18:41,405 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:18:41,405 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-13 10:18:41,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:41 BoogieIcfgContainer [2020-10-13 10:18:41,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:18:41,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:18:41,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:18:41,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:18:41,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:18:40" (1/3) ... [2020-10-13 10:18:41,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d48af19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:41, skipping insertion in model container [2020-10-13 10:18:41,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:40" (2/3) ... [2020-10-13 10:18:41,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d48af19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:41, skipping insertion in model container [2020-10-13 10:18:41,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:41" (3/3) ... [2020-10-13 10:18:41,421 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0970a.c [2020-10-13 10:18:41,432 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:18:41,441 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:18:41,456 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:18:41,477 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:18:41,478 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:18:41,478 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:18:41,478 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:18:41,478 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:18:41,478 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:18:41,478 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:18:41,479 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:18:41,496 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2020-10-13 10:18:41,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:18:41,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:41,503 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 10:18:41,504 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:41,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:41,510 INFO L82 PathProgramCache]: Analyzing trace with hash 678744586, now seen corresponding path program 1 times [2020-10-13 10:18:41,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:41,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366294336] [2020-10-13 10:18:41,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:41,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:41,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:41,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:41,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:18:41,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:18:41,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-13 10:18:41,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 10:18:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:41,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:18:42,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:18:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:42,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:42,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:42,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:42,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:42,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:18:42,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:42,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:42,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:42,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:42,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:42,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:18:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:42,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:42,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:42,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:18:42,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:42,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:18:42,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:42,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:18:42,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:42,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 10:18:42,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 10:18:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:42,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:42,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:42,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:42,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:42,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 10:18:42,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:42,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:42,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:18:42,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:42,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:42,161 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 10:18:42,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366294336] [2020-10-13 10:18:42,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:18:42,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:18:42,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133767695] [2020-10-13 10:18:42,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:18:42,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:18:42,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:18:42,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:18:42,191 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 4 states. [2020-10-13 10:18:42,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:18:42,650 INFO L93 Difference]: Finished difference Result 134 states and 200 transitions. [2020-10-13 10:18:42,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:18:42,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-13 10:18:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:18:42,664 INFO L225 Difference]: With dead ends: 134 [2020-10-13 10:18:42,665 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 10:18:42,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:18:42,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 10:18:42,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-13 10:18:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-13 10:18:42,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2020-10-13 10:18:42,729 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 24 [2020-10-13 10:18:42,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:18:42,730 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2020-10-13 10:18:42,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:18:42,730 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2020-10-13 10:18:42,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 10:18:42,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:42,732 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 10:18:42,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:18:42,732 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:42,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:42,733 INFO L82 PathProgramCache]: Analyzing trace with hash 728205110, now seen corresponding path program 1 times [2020-10-13 10:18:42,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:42,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662172132] [2020-10-13 10:18:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:42,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:42,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:42,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 10:18:42,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:42,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 10:18:42,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:42,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:18:42,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:18:42,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:18:42,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:42,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:18:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:42,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:42,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:42,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:42,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:42,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:18:42,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:42,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:42,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:42,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:42,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:43,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:18:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:43,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:43,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:43,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:18:43,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:43,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 10:18:43,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:43,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:43,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:18:43,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:43,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:43,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 10:18:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:43,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:43,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:43,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:43,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:43,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:18:43,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:43,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:43,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:18:43,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:43,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:43,049 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 10:18:43,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662172132] [2020-10-13 10:18:43,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:18:43,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:18:43,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033074093] [2020-10-13 10:18:43,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:18:43,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:18:43,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:18:43,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:18:43,053 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand 5 states. [2020-10-13 10:18:43,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:18:43,485 INFO L93 Difference]: Finished difference Result 113 states and 142 transitions. [2020-10-13 10:18:43,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:18:43,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-13 10:18:43,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:18:43,487 INFO L225 Difference]: With dead ends: 113 [2020-10-13 10:18:43,487 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 10:18:43,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:18:43,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 10:18:43,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-13 10:18:43,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-13 10:18:43,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2020-10-13 10:18:43,502 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 25 [2020-10-13 10:18:43,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:18:43,502 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2020-10-13 10:18:43,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:18:43,503 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2020-10-13 10:18:43,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:18:43,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:43,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:18:43,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:18:43,505 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:43,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:43,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1733658903, now seen corresponding path program 1 times [2020-10-13 10:18:43,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:43,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167675999] [2020-10-13 10:18:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:18:43,541 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:18:43,542 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:18:43,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:18:43,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:18:43 BoogieIcfgContainer [2020-10-13 10:18:43,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:18:43,567 INFO L168 Benchmark]: Toolchain (without parser) took 3369.45 ms. Allocated memory was 145.2 MB in the beginning and 248.5 MB in the end (delta: 103.3 MB). Free memory was 100.6 MB in the beginning and 177.7 MB in the end (delta: -77.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:43,568 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:18:43,569 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.32 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 100.4 MB in the beginning and 176.4 MB in the end (delta: -76.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:43,570 INFO L168 Benchmark]: Boogie Preprocessor took 59.41 ms. Allocated memory is still 201.3 MB. Free memory was 176.4 MB in the beginning and 173.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:43,571 INFO L168 Benchmark]: RCFGBuilder took 619.20 ms. Allocated memory is still 201.3 MB. Free memory was 173.7 MB in the beginning and 141.1 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:43,572 INFO L168 Benchmark]: TraceAbstraction took 2150.46 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 140.4 MB in the beginning and 177.7 MB in the end (delta: -37.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:43,576 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 145.2 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 535.32 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 100.4 MB in the beginning and 176.4 MB in the end (delta: -76.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.41 ms. Allocated memory is still 201.3 MB. Free memory was 176.4 MB in the beginning and 173.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 619.20 ms. Allocated memory is still 201.3 MB. Free memory was 173.7 MB in the beginning and 141.1 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2150.46 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 140.4 MB in the beginning and 177.7 MB in the end (delta: -37.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 188]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 132, overapproximation of bitwiseAnd at line 170, overapproximation of someBinaryArithmeticDOUBLEoperation at line 133, overapproximation of someBinaryDOUBLEComparisonOperation at line 161. Possible FailurePath: [L17-L26] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L28] static const double zero = 0.0; [L111-L114] static const double two54_log10 = 1.80143985094819840000e+16, ivln10_log10 = 4.34294481903251816668e-01, log10_2hi_log10 = 3.01029995663611771306e-01, log10_2lo_log10 = 3.69423907715893078616e-13; [L116] static const double zero_log10 = 0.0; [L180] double x = __VERIFIER_nondet_double(); [L182] x < 0 && isfinite_double(x) [L182] CALL, EXPR isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L182] RET, EXPR isfinite_double(x) [L182] x < 0 && isfinite_double(x) [L182] COND TRUE x < 0 && isfinite_double(x) [L184] CALL, EXPR __ieee754_log10(x) [L119] double y, z; [L120] __int32_t i, k, hx; [L121] __uint32_t lx; [L124] ieee_double_shape_type ew_u; [L125] ew_u.value = (x) [L126] EXPR ew_u.parts.msw [L126] (hx) = ew_u.parts.msw [L127] EXPR ew_u.parts.lsw [L127] (lx) = ew_u.parts.lsw [L130] k = 0 [L131] COND TRUE hx < 0x00100000 [L132] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L133] return -two54_log10 / zero_log10; [L184] RET, EXPR __ieee754_log10(x) [L184] double res = __ieee754_log10(x); [L187] CALL, EXPR isnan_double(res) [L161] return x != x; [L187] RET, EXPR isnan_double(res) [L187] COND TRUE !isnan_double(res) [L188] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 138 SDtfs, 146 SDslu, 16 SDs, 0 SdLazy, 234 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 4372 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...