/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_0684b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:18:14,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:18:14,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:18:14,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:18:14,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:18:14,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:18:14,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:18:14,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:18:14,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:18:14,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:18:14,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:18:14,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:18:14,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:18:14,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:18:14,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:18:14,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:18:14,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:18:14,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:18:14,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:18:14,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:18:14,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:18:14,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:18:14,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:18:14,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:18:14,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:18:14,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:18:14,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:18:14,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:18:14,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:18:14,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:18:14,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:18:14,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:18:14,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:18:14,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:18:14,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:18:14,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:18:14,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:18:14,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:18:14,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:18:14,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:18:14,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:18:14,663 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 10:18:14,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:18:14,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:18:14,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:18:14,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:18:14,705 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:18:14,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:18:14,706 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:18:14,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:18:14,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:18:14,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:18:14,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:18:14,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:18:14,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:18:14,708 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:18:14,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:18:14,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:18:14,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:18:14,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:18:14,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:18:14,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:18:14,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:18:14,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:18:14,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:18:14,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:18:14,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:18:14,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:18:14,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:18:14,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:18:14,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:18:14,711 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 10:18:14,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:18:14,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:18:15,001 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:18:15,002 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:18:15,003 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:18:15,003 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0684b.c [2020-10-13 10:18:15,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6251b234/749a1bf8709048d38889d8fe6622f301/FLAG7784a247d [2020-10-13 10:18:15,554 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:18:15,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0684b.c [2020-10-13 10:18:15,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6251b234/749a1bf8709048d38889d8fe6622f301/FLAG7784a247d [2020-10-13 10:18:15,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6251b234/749a1bf8709048d38889d8fe6622f301 [2020-10-13 10:18:15,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:18:15,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:18:15,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:15,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:18:15,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:18:15,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:15" (1/1) ... [2020-10-13 10:18:15,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60808b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:15, skipping insertion in model container [2020-10-13 10:18:15,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:15" (1/1) ... [2020-10-13 10:18:15,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:18:15,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:18:16,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:16,286 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:18:16,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:16,432 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:18:16,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:16 WrapperNode [2020-10-13 10:18:16,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:16,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:18:16,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:18:16,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:18:16,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:16" (1/1) ... [2020-10-13 10:18:16,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:16" (1/1) ... [2020-10-13 10:18:16,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:16" (1/1) ... [2020-10-13 10:18:16,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:16" (1/1) ... [2020-10-13 10:18:16,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:16" (1/1) ... [2020-10-13 10:18:16,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:16" (1/1) ... [2020-10-13 10:18:16,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:16" (1/1) ... [2020-10-13 10:18:16,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:18:16,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:18:16,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:18:16,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:18:16,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:16" (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 10:18:16,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:18:16,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:18:16,614 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-13 10:18:16,614 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-13 10:18:16,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-13 10:18:16,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-13 10:18:16,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-13 10:18:16,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:18:16,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:18:16,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-13 10:18:16,616 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-13 10:18:16,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:18:16,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:18:16,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:18:16,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:18:16,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:18:16,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:18:16,618 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-13 10:18:16,618 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-13 10:18:16,618 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-13 10:18:16,619 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-13 10:18:16,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:18:16,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:18:16,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-13 10:18:16,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:18:17,348 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:18:17,349 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-13 10:18:17,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:17 BoogieIcfgContainer [2020-10-13 10:18:17,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:18:17,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:18:17,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:18:17,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:18:17,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:18:15" (1/3) ... [2020-10-13 10:18:17,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165c2cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:17, skipping insertion in model container [2020-10-13 10:18:17,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:16" (2/3) ... [2020-10-13 10:18:17,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165c2cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:17, skipping insertion in model container [2020-10-13 10:18:17,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:17" (3/3) ... [2020-10-13 10:18:17,364 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0684b.c [2020-10-13 10:18:17,375 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:18:17,384 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:18:17,400 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:18:17,426 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:18:17,427 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:18:17,427 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:18:17,427 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:18:17,427 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:18:17,427 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:18:17,428 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:18:17,428 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:18:17,450 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states. [2020-10-13 10:18:17,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 10:18:17,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:17,460 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] [2020-10-13 10:18:17,460 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:17,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:17,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1181622730, now seen corresponding path program 1 times [2020-10-13 10:18:17,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:17,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056974369] [2020-10-13 10:18:17,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:17,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:17,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:17,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:17,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:18,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:18,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 10:18:18,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:18:18,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 739 [2020-10-13 10:18:18,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:18,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 10:18:18,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:18,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 10:18:18,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:18:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:18,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:18,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:18,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:18,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:18,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:18:18,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:18,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:18,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:18,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:18,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:18,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:18:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:18,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:18,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:18,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:18,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:18:18,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:18:18,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 10:18:18,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:18,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:18,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:18,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:18,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:18,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:18:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:18,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:18,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:18,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:18,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:18:18,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:18:18,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 10:18:18,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:18,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:18:18,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:18,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:18,609 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 10:18:18,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056974369] [2020-10-13 10:18:18,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:18:18,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:18:18,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855255224] [2020-10-13 10:18:18,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:18:18,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:18:18,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:18:18,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:18:18,638 INFO L87 Difference]: Start difference. First operand 120 states. Second operand 4 states. [2020-10-13 10:18:19,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:18:19,094 INFO L93 Difference]: Finished difference Result 232 states and 362 transitions. [2020-10-13 10:18:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:18:19,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-13 10:18:19,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:18:19,111 INFO L225 Difference]: With dead ends: 232 [2020-10-13 10:18:19,138 INFO L226 Difference]: Without dead ends: 115 [2020-10-13 10:18:19,143 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 10:18:19,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-13 10:18:19,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-13 10:18:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 10:18:19,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 155 transitions. [2020-10-13 10:18:19,210 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 155 transitions. Word has length 27 [2020-10-13 10:18:19,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:18:19,210 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 155 transitions. [2020-10-13 10:18:19,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:18:19,211 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 155 transitions. [2020-10-13 10:18:19,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 10:18:19,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:19,213 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] [2020-10-13 10:18:19,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:18:19,213 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:19,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:19,214 INFO L82 PathProgramCache]: Analyzing trace with hash 258080510, now seen corresponding path program 1 times [2020-10-13 10:18:19,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:19,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383663569] [2020-10-13 10:18:19,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:19,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:19,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:19,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 10:18:19,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:19,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-13 10:18:19,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:19,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:18:19,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:18:19,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:18:19,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:19,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:18:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:19,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:19,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:19,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:19,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:19,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:18:19,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:19,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:19,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:19,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:19,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:19,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:18:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:19,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:19,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:19,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:18:19,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:19,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 10:18:19,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:19,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:19,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 10:18:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:19,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:19,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:19,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:18:19,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:19,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 10:18:19,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:19,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:19,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:18:19,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:19,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:19,541 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 10:18:19,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383663569] [2020-10-13 10:18:19,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:18:19,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:18:19,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735436434] [2020-10-13 10:18:19,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:18:19,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:18:19,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:18:19,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:18:19,545 INFO L87 Difference]: Start difference. First operand 115 states and 155 transitions. Second operand 5 states. [2020-10-13 10:18:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:18:19,949 INFO L93 Difference]: Finished difference Result 207 states and 286 transitions. [2020-10-13 10:18:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:18:19,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-13 10:18:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:18:19,952 INFO L225 Difference]: With dead ends: 207 [2020-10-13 10:18:19,952 INFO L226 Difference]: Without dead ends: 115 [2020-10-13 10:18:19,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:18:19,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-13 10:18:19,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-13 10:18:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 10:18:19,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 154 transitions. [2020-10-13 10:18:19,969 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 154 transitions. Word has length 30 [2020-10-13 10:18:19,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:18:19,969 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 154 transitions. [2020-10-13 10:18:19,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:18:19,970 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 154 transitions. [2020-10-13 10:18:19,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:18:19,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:19,971 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, 1, 1, 1, 1, 1] [2020-10-13 10:18:19,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:18:19,972 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:19,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:19,972 INFO L82 PathProgramCache]: Analyzing trace with hash -5924694, now seen corresponding path program 1 times [2020-10-13 10:18:19,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:19,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136373500] [2020-10-13 10:18:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:18:20,049 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:18:20,049 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:18:20,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:18:20,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:18:20 BoogieIcfgContainer [2020-10-13 10:18:20,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:18:20,078 INFO L168 Benchmark]: Toolchain (without parser) took 4212.47 ms. Allocated memory was 147.3 MB in the beginning and 243.8 MB in the end (delta: 96.5 MB). Free memory was 102.3 MB in the beginning and 169.5 MB in the end (delta: -67.2 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:20,079 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 121.2 MB in the beginning and 120.7 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-13 10:18:20,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.47 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 101.9 MB in the beginning and 178.5 MB in the end (delta: -76.6 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:20,081 INFO L168 Benchmark]: Boogie Preprocessor took 76.79 ms. Allocated memory is still 205.0 MB. Free memory was 178.5 MB in the beginning and 174.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:20,082 INFO L168 Benchmark]: RCFGBuilder took 844.03 ms. Allocated memory is still 205.0 MB. Free memory was 174.5 MB in the beginning and 125.8 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:20,083 INFO L168 Benchmark]: TraceAbstraction took 2719.14 ms. Allocated memory was 205.0 MB in the beginning and 243.8 MB in the end (delta: 38.8 MB). Free memory was 124.8 MB in the beginning and 169.5 MB in the end (delta: -44.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:18:20,087 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 121.2 MB in the beginning and 120.7 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 567.47 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 101.9 MB in the beginning and 178.5 MB in the end (delta: -76.6 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.79 ms. Allocated memory is still 205.0 MB. Free memory was 178.5 MB in the beginning and 174.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 844.03 ms. Allocated memory is still 205.0 MB. Free memory was 174.5 MB in the beginning and 125.8 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2719.14 ms. Allocated memory was 205.0 MB in the beginning and 243.8 MB in the end (delta: 38.8 MB). Free memory was 124.8 MB in the beginning and 169.5 MB in the end (delta: -44.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 286]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 162, overapproximation of someUnaryDOUBLEoperation at line 52, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryDOUBLEComparisonOperation at line 285. Possible FailurePath: [L37-L42] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L44-L49] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L51-L58] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L60-L62] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L139-L140] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L276] double x = __VERIFIER_nondet_double(); [L277] double y = -1.0 / 0.0; [L280] CALL, EXPR isfinite_double(x) [L260] __int32_t hx; [L262] ieee_double_shape_type gh_u; [L263] gh_u.value = (x) [L264] EXPR gh_u.parts.msw [L264] (hx) = gh_u.parts.msw [L266] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L280] RET, EXPR isfinite_double(x) [L280] isfinite_double(x) && isinf_double(y) [L280] CALL, EXPR isinf_double(y) [L246] __int32_t hx, lx; [L248] ieee_double_shape_type ew_u; [L249] ew_u.value = (x) [L250] EXPR ew_u.parts.msw [L250] (hx) = ew_u.parts.msw [L251] EXPR ew_u.parts.lsw [L251] (lx) = ew_u.parts.lsw [L253] hx &= 0x7fffffff [L254] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L255] hx = 0x7ff00000 - hx [L256] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L280] RET, EXPR isinf_double(y) [L280] isfinite_double(x) && isinf_double(y) [L280] COND TRUE isfinite_double(x) && isinf_double(y) [L282] CALL, EXPR __ieee754_atan2(y, x) [L143] double z; [L144] __int32_t k, m, hx, hy, ix, iy; [L145] __uint32_t lx, ly; [L148] ieee_double_shape_type ew_u; [L149] ew_u.value = (x) [L150] EXPR ew_u.parts.msw [L150] (hx) = ew_u.parts.msw [L151] EXPR ew_u.parts.lsw [L151] (lx) = ew_u.parts.lsw [L153] ix = hx & 0x7fffffff [L155] ieee_double_shape_type ew_u; [L156] ew_u.value = (y) [L157] EXPR ew_u.parts.msw [L157] (hy) = ew_u.parts.msw [L158] EXPR ew_u.parts.lsw [L158] (ly) = ew_u.parts.lsw [L160] iy = hy & 0x7fffffff [L161-L162] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L163] return x + y; [L282] RET, EXPR __ieee754_atan2(y, x) [L282] double res = __ieee754_atan2(y, x); [L285] COND TRUE res != -pi_o_2 [L286] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 120 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 304 SDtfs, 24 SDslu, 416 SDs, 0 SdLazy, 322 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 5836 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...