/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 SingleStatement --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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:10:53,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:10:53,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:10:53,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:10:53,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:10:53,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:10:53,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:10:53,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:10:53,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:10:53,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:10:53,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:10:53,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:10:53,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:10:53,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:10:53,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:10:53,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:10:53,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:10:53,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:10:53,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:10:53,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:10:53,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:10:53,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:10:53,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:10:53,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:10:53,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:10:53,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:10:53,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:10:53,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:10:53,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:10:53,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:10:53,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:10:53,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:10:53,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:10:53,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:10:53,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:10:53,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:10:53,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:10:53,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:10:53,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:10:53,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:10:53,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:10:53,494 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 [2020-09-24 18:10:53,551 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:10:53,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:10:53,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:10:53,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:10:53,553 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:10:53,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:10:53,554 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:10:53,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:10:53,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:10:53,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:10:53,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:10:53,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:10:53,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:10:53,557 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:10:53,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:10:53,558 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:10:53,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:10:53,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:10:53,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:10:53,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:10:53,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:10:53,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:10:53,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:10:53,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:10:53,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:10:53,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:10:53,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:10:53,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:10:53,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:10:53,561 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 -> SingleStatement 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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=true; [2020-09-24 18:10:54,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:10:54,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:10:54,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:10:54,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:10:54,134 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:10:54,135 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-24 18:10:54,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2272b576/1e9add08b7f1466c93694f4c36ab6632/FLAG009cf2dd4 [2020-09-24 18:10:54,804 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:10:54,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-24 18:10:54,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2272b576/1e9add08b7f1466c93694f4c36ab6632/FLAG009cf2dd4 [2020-09-24 18:10:55,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2272b576/1e9add08b7f1466c93694f4c36ab6632 [2020-09-24 18:10:55,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:10:55,137 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:10:55,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:10:55,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:10:55,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:10:55,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:10:55" (1/1) ... [2020-09-24 18:10:55,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@387f035d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:55, skipping insertion in model container [2020-09-24 18:10:55,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:10:55" (1/1) ... [2020-09-24 18:10:55,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:10:55,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:10:55,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:10:55,518 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:10:55,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:10:55,701 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:10:55,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:55 WrapperNode [2020-09-24 18:10:55,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:10:55,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:10:55,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:10:55,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:10:55,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:55" (1/1) ... [2020-09-24 18:10:55,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:55" (1/1) ... [2020-09-24 18:10:55,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:55" (1/1) ... [2020-09-24 18:10:55,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:55" (1/1) ... [2020-09-24 18:10:55,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:55" (1/1) ... [2020-09-24 18:10:55,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:55" (1/1) ... [2020-09-24 18:10:55,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:55" (1/1) ... [2020-09-24 18:10:55,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:10:55,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:10:55,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:10:55,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:10:55,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:55" (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 [2020-09-24 18:10:55,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:10:55,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:10:55,866 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-24 18:10:55,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-09-24 18:10:55,867 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:10:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:10:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 18:10:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-24 18:10:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:10:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 18:10:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:10:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:10:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 18:10:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:10:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-09-24 18:10:55,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:10:55,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:10:55,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-24 18:10:55,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:10:56,611 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:10:56,611 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-24 18:10:56,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:10:56 BoogieIcfgContainer [2020-09-24 18:10:56,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:10:56,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:10:56,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:10:56,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:10:56,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:10:55" (1/3) ... [2020-09-24 18:10:56,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3516e9a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:10:56, skipping insertion in model container [2020-09-24 18:10:56,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:55" (2/3) ... [2020-09-24 18:10:56,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3516e9a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:10:56, skipping insertion in model container [2020-09-24 18:10:56,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:10:56" (3/3) ... [2020-09-24 18:10:56,628 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-09-24 18:10:56,640 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:10:56,652 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:10:56,674 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:10:56,704 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:10:56,704 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:10:56,704 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:10:56,705 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:10:56,705 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:10:56,705 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:10:56,705 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:10:56,705 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:10:56,730 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-09-24 18:10:56,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 18:10:56,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:10:56,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:10:56,743 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:10:56,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:10:56,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1577177176, now seen corresponding path program 1 times [2020-09-24 18:10:56,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:10:56,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844096591] [2020-09-24 18:10:56,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:10:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:56,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:57,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:57,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:57,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:57,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 18:10:57,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:10:57,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-09-24 18:10:57,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:57,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:10:57,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 18:10:57,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:10:57,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:10:57,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:10:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:57,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:57,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:57,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:10:57,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:10:57,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:10:57,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:57,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:10:57,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:10:57,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:10:57,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:10:57,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 18:10:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:57,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:57,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:57,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:57,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:10:57,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:10:57,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 18:10:57,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:10:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 18:10:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:10:57,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:10:57,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:10:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:57,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:57,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:57,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:57,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 18:10:57,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:10:57,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:10:57,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:57,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:10:57,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 18:10:57,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:10:57,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:10:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:10:57,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844096591] [2020-09-24 18:10:57,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:10:57,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:10:57,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532966607] [2020-09-24 18:10:57,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:10:57,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:10:57,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:10:57,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:10:57,598 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2020-09-24 18:10:58,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:10:58,128 INFO L93 Difference]: Finished difference Result 414 states and 503 transitions. [2020-09-24 18:10:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:10:58,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-24 18:10:58,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:10:58,146 INFO L225 Difference]: With dead ends: 414 [2020-09-24 18:10:58,147 INFO L226 Difference]: Without dead ends: 209 [2020-09-24 18:10:58,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:10:58,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-24 18:10:58,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-09-24 18:10:58,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-09-24 18:10:58,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 235 transitions. [2020-09-24 18:10:58,224 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 235 transitions. Word has length 51 [2020-09-24 18:10:58,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:10:58,224 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 235 transitions. [2020-09-24 18:10:58,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:10:58,226 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 235 transitions. [2020-09-24 18:10:58,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 18:10:58,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:10:58,232 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:10:58,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:10:58,233 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:10:58,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:10:58,233 INFO L82 PathProgramCache]: Analyzing trace with hash -16125544, now seen corresponding path program 1 times [2020-09-24 18:10:58,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:10:58,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257826224] [2020-09-24 18:10:58,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:10:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:10:58,355 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:10:58,364 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:10:58,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:10:58,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:10:58 BoogieIcfgContainer [2020-09-24 18:10:58,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:10:58,425 INFO L168 Benchmark]: Toolchain (without parser) took 3290.37 ms. Allocated memory was 137.9 MB in the beginning and 231.2 MB in the end (delta: 93.3 MB). Free memory was 99.5 MB in the beginning and 118.6 MB in the end (delta: -19.1 MB). Peak memory consumption was 74.2 MB. Max. memory is 7.1 GB. [2020-09-24 18:10:58,426 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 118.2 MB in the beginning and 117.7 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-09-24 18:10:58,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 564.14 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 98.7 MB in the beginning and 176.1 MB in the end (delta: -77.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-24 18:10:58,428 INFO L168 Benchmark]: Boogie Preprocessor took 69.82 ms. Allocated memory is still 200.8 MB. Free memory was 176.1 MB in the beginning and 172.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-09-24 18:10:58,429 INFO L168 Benchmark]: RCFGBuilder took 845.38 ms. Allocated memory is still 200.8 MB. Free memory was 172.9 MB in the beginning and 126.4 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. [2020-09-24 18:10:58,431 INFO L168 Benchmark]: TraceAbstraction took 1801.44 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 126.4 MB in the beginning and 118.6 MB in the end (delta: 7.7 MB). Peak memory consumption was 38.1 MB. Max. memory is 7.1 GB. [2020-09-24 18:10:58,435 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 137.9 MB. Free memory was 118.2 MB in the beginning and 117.7 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 564.14 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 98.7 MB in the beginning and 176.1 MB in the end (delta: -77.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.82 ms. Allocated memory is still 200.8 MB. Free memory was 176.1 MB in the beginning and 172.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 845.38 ms. Allocated memory is still 200.8 MB. Free memory was 172.9 MB in the beginning and 126.4 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1801.44 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 126.4 MB in the beginning and 118.6 MB in the end (delta: 7.7 MB). Peak memory consumption was 38.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 216 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 239 SDtfs, 37 SDslu, 182 SDs, 0 SdLazy, 260 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 4750 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...