/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=SHALLOWEST --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/float_req_bl_1012b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:44:27,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:44:27,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:44:27,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:44:27,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:44:27,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:44:27,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:44:27,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:44:27,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:44:27,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:44:27,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:44:27,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:44:27,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:44:27,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:44:27,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:44:27,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:44:27,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:44:27,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:44:27,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:44:27,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:44:27,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:44:27,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:44:27,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:44:27,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:44:27,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:44:27,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:44:27,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:44:27,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:44:27,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:44:27,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:44:27,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:44:27,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:44:27,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:44:27,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:44:27,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:44:27,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:44:27,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:44:27,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:44:27,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:44:27,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:44:27,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:44:27,239 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 23:44:27,303 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:44:27,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:44:27,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:44:27,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:44:27,309 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:44:27,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:44:27,310 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:44:27,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:44:27,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:44:27,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:44:27,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:44:27,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:44:27,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:44:27,312 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:44:27,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:44:27,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:44:27,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:44:27,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:44:27,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:44:27,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:44:27,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:44:27,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:44:27,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:44:27,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:44:27,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:44:27,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:44:27,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:44:27,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:44:27,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:44:27,316 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:44:27,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:44:27,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:44:27,838 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:44:27,841 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:44:27,841 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:44:27,843 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1012b.c [2020-09-24 23:44:27,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57d623e1b/a85eaafe42004f5e8d2a9e2f29fc39d4/FLAG66ce8d10a [2020-09-24 23:44:28,511 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:44:28,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1012b.c [2020-09-24 23:44:28,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57d623e1b/a85eaafe42004f5e8d2a9e2f29fc39d4/FLAG66ce8d10a [2020-09-24 23:44:28,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57d623e1b/a85eaafe42004f5e8d2a9e2f29fc39d4 [2020-09-24 23:44:28,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:44:28,864 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:44:28,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:44:28,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:44:28,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:44:28,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:28" (1/1) ... [2020-09-24 23:44:28,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12925ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:28, skipping insertion in model container [2020-09-24 23:44:28,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:28" (1/1) ... [2020-09-24 23:44:28,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:44:28,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:44:29,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:44:29,183 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:44:29,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:44:29,239 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:44:29,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:29 WrapperNode [2020-09-24 23:44:29,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:44:29,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:44:29,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:44:29,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:44:29,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:29" (1/1) ... [2020-09-24 23:44:29,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:29" (1/1) ... [2020-09-24 23:44:29,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:29" (1/1) ... [2020-09-24 23:44:29,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:29" (1/1) ... [2020-09-24 23:44:29,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:29" (1/1) ... [2020-09-24 23:44:29,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:29" (1/1) ... [2020-09-24 23:44:29,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:29" (1/1) ... [2020-09-24 23:44:29,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:44:29,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:44:29,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:44:29,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:44:29,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:29" (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 23:44:29,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:44:29,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:44:29,459 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-09-24 23:44:29,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-09-24 23:44:29,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:44:29,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:44:29,459 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-09-24 23:44:29,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:44:29,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 23:44:29,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:44:29,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:44:29,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:44:29,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 23:44:29,461 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-09-24 23:44:29,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:44:29,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:44:29,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:44:29,836 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:44:29,836 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-24 23:44:29,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:29 BoogieIcfgContainer [2020-09-24 23:44:29,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:44:29,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:44:29,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:44:29,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:44:29,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:44:28" (1/3) ... [2020-09-24 23:44:29,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd9eb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:29, skipping insertion in model container [2020-09-24 23:44:29,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:29" (2/3) ... [2020-09-24 23:44:29,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd9eb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:29, skipping insertion in model container [2020-09-24 23:44:29,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:29" (3/3) ... [2020-09-24 23:44:29,859 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012b.c [2020-09-24 23:44:29,869 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:44:29,880 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:44:29,901 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:44:29,930 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:44:29,930 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:44:29,930 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:44:29,931 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:44:29,931 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:44:29,931 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:44:29,931 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:44:29,931 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:44:29,953 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-24 23:44:29,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 23:44:29,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:29,961 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] [2020-09-24 23:44:29,962 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:29,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:29,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1851120069, now seen corresponding path program 1 times [2020-09-24 23:44:29,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:29,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436869920] [2020-09-24 23:44:29,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:30,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:30,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:30,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:30,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:30,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 23:44:30,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:44:30,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-24 23:44:30,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:30,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:30,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:44:30,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:30,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:44:30,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:44:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:30,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:30,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:30,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:44:30,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:30,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:44:30,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:30,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:30,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:30,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:30,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:30,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:44:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:30,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:30,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:30,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:30,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:44:30,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:44:30,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:44:30,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:30,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:30,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 23:44:30,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:30,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:30,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 23:44:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:30,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:30,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:30,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:30,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:44:30,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:44:30,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:44:30,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 23:44:30,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:30,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:30,517 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 23:44:30,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436869920] [2020-09-24 23:44:30,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:44:30,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:44:30,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684082489] [2020-09-24 23:44:30,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:44:30,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:44:30,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:44:30,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:44:30,550 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-09-24 23:44:30,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:44:30,770 INFO L93 Difference]: Finished difference Result 118 states and 131 transitions. [2020-09-24 23:44:30,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 23:44:30,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-09-24 23:44:30,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:44:30,785 INFO L225 Difference]: With dead ends: 118 [2020-09-24 23:44:30,786 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 23:44:30,791 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 23:44:30,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 23:44:30,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 23:44:30,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 23:44:30,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 57 transitions. [2020-09-24 23:44:30,852 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 57 transitions. Word has length 30 [2020-09-24 23:44:30,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:44:30,853 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 57 transitions. [2020-09-24 23:44:30,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:44:30,853 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 57 transitions. [2020-09-24 23:44:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 23:44:30,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:30,856 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] [2020-09-24 23:44:30,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:44:30,857 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:30,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:30,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1434482942, now seen corresponding path program 1 times [2020-09-24 23:44:30,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:30,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244394271] [2020-09-24 23:44:30,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:44:30,961 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:44:30,961 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:44:30,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:44:30,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:44:30 BoogieIcfgContainer [2020-09-24 23:44:30,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:44:30,993 INFO L168 Benchmark]: Toolchain (without parser) took 2131.67 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 103.1 MB in the beginning and 99.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 66.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:30,995 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 23:44:30,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.32 ms. Allocated memory is still 140.0 MB. Free memory was 102.4 MB in the beginning and 92.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:30,997 INFO L168 Benchmark]: Boogie Preprocessor took 138.13 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.0 MB in the beginning and 180.3 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:30,998 INFO L168 Benchmark]: RCFGBuilder took 463.40 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 159.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:30,999 INFO L168 Benchmark]: TraceAbstraction took 1144.57 ms. Allocated memory is still 202.9 MB. Free memory was 159.7 MB in the beginning and 99.5 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:31,003 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 374.32 ms. Allocated memory is still 140.0 MB. Free memory was 102.4 MB in the beginning and 92.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.13 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.0 MB in the beginning and 180.3 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 463.40 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 159.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1144.57 ms. Allocated memory is still 202.9 MB. Free memory was 159.7 MB in the beginning and 99.5 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 51]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L46] float x = -1.0f / 0.0f; [L47] CALL, EXPR fabs_float(x) [L12] __uint32_t ix; [L14] ieee_float_shape_type gf_u; [L15] gf_u.value = (x) [L16] EXPR gf_u.word [L16] (ix) = gf_u.word [L19] ieee_float_shape_type sf_u; [L20] sf_u.word = (ix & 0x7fffffff) [L21] EXPR sf_u.value [L21] (x) = sf_u.value [L23] return x; [L47] RET, EXPR fabs_float(x) [L47] float res = fabs_float(x); [L50] CALL, EXPR isinf_float(res) [L28] __int32_t ix; [L30] ieee_float_shape_type gf_u; [L31] gf_u.value = (x) [L32] EXPR gf_u.word [L32] (ix) = gf_u.word [L34] ix &= 0x7fffffff [L35] return ((ix) == 0x7f800000L); [L50] RET, EXPR isinf_float(res) [L50] COND TRUE !isinf_float(res) [L51] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 11 SDslu, 40 SDs, 0 SdLazy, 70 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=65occurred 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, 0.4s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 1798 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...