/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 21:36:27,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 21:36:27,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 21:36:27,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 21:36:27,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 21:36:27,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 21:36:27,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 21:36:27,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 21:36:27,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 21:36:27,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 21:36:27,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 21:36:27,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 21:36:27,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 21:36:27,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 21:36:27,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 21:36:27,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 21:36:27,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 21:36:27,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 21:36:27,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 21:36:27,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 21:36:27,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 21:36:27,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 21:36:27,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 21:36:27,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 21:36:27,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 21:36:27,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 21:36:27,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 21:36:27,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 21:36:27,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 21:36:27,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 21:36:27,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 21:36:27,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 21:36:27,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 21:36:27,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 21:36:27,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 21:36:27,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 21:36:27,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 21:36:27,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 21:36:27,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 21:36:27,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 21:36:27,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 21:36:27,238 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 21:36:27,258 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 21:36:27,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 21:36:27,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 21:36:27,259 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 21:36:27,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 21:36:27,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 21:36:27,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 21:36:27,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 21:36:27,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 21:36:27,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 21:36:27,261 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 21:36:27,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 21:36:27,261 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 21:36:27,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 21:36:27,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 21:36:27,262 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 21:36:27,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 21:36:27,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 21:36:27,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 21:36:27,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 21:36:27,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 21:36:27,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 21:36:27,263 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-09-04 21:36:27,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 21:36:27,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 21:36:27,723 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 21:36:27,724 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 21:36:27,725 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 21:36:27,726 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-04 21:36:27,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e92dee22b/b336b51144954da3b4d6745dd94125b9/FLAG259a6996a [2020-09-04 21:36:28,353 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 21:36:28,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-04 21:36:28,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e92dee22b/b336b51144954da3b4d6745dd94125b9/FLAG259a6996a [2020-09-04 21:36:28,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e92dee22b/b336b51144954da3b4d6745dd94125b9 [2020-09-04 21:36:28,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 21:36:28,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 21:36:28,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 21:36:28,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 21:36:28,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 21:36:28,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:36:28" (1/1) ... [2020-09-04 21:36:28,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a612428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:28, skipping insertion in model container [2020-09-04 21:36:28,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:36:28" (1/1) ... [2020-09-04 21:36:28,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 21:36:28,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 21:36:29,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:36:29,048 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 21:36:29,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:36:29,219 INFO L208 MainTranslator]: Completed translation [2020-09-04 21:36:29,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:29 WrapperNode [2020-09-04 21:36:29,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 21:36:29,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 21:36:29,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 21:36:29,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 21:36:29,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:29" (1/1) ... [2020-09-04 21:36:29,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:29" (1/1) ... [2020-09-04 21:36:29,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:29" (1/1) ... [2020-09-04 21:36:29,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:29" (1/1) ... [2020-09-04 21:36:29,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:29" (1/1) ... [2020-09-04 21:36:29,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:29" (1/1) ... [2020-09-04 21:36:29,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:29" (1/1) ... [2020-09-04 21:36:29,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 21:36:29,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 21:36:29,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 21:36:29,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 21:36:29,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:29" (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 [2020-09-04 21:36:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 21:36:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 21:36:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-04 21:36:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-09-04 21:36:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 21:36:29,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 21:36:29,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-04 21:36:29,378 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-04 21:36:29,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 21:36:29,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 21:36:29,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 21:36:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 21:36:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 21:36:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 21:36:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-09-04 21:36:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 21:36:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 21:36:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-04 21:36:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 21:36:30,034 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 21:36:30,035 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-04 21:36:30,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:36:30 BoogieIcfgContainer [2020-09-04 21:36:30,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 21:36:30,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 21:36:30,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 21:36:30,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 21:36:30,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 09:36:28" (1/3) ... [2020-09-04 21:36:30,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce6c434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:36:30, skipping insertion in model container [2020-09-04 21:36:30,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:29" (2/3) ... [2020-09-04 21:36:30,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce6c434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:36:30, skipping insertion in model container [2020-09-04 21:36:30,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:36:30" (3/3) ... [2020-09-04 21:36:30,052 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-09-04 21:36:30,063 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 21:36:30,074 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 21:36:30,097 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 21:36:30,120 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 21:36:30,121 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 21:36:30,121 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 21:36:30,121 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 21:36:30,121 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 21:36:30,121 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 21:36:30,121 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 21:36:30,121 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 21:36:30,142 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-09-04 21:36:30,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-04 21:36:30,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:36:30,158 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] [2020-09-04 21:36:30,159 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:36:30,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:36:30,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1577177176, now seen corresponding path program 1 times [2020-09-04 21:36:30,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:36:30,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273072316] [2020-09-04 21:36:30,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:36:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:30,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:36:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:30,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 21:36:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:30,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 21:36:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 21:36:30,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273072316] [2020-09-04 21:36:30,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:36:30,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 21:36:30,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857311407] [2020-09-04 21:36:30,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 21:36:30,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:36:30,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 21:36:30,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 21:36:30,490 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2020-09-04 21:36:31,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:36:31,042 INFO L93 Difference]: Finished difference Result 414 states and 503 transitions. [2020-09-04 21:36:31,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 21:36:31,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-04 21:36:31,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:36:31,060 INFO L225 Difference]: With dead ends: 414 [2020-09-04 21:36:31,060 INFO L226 Difference]: Without dead ends: 209 [2020-09-04 21:36:31,067 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 [2020-09-04 21:36:31,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-04 21:36:31,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-09-04 21:36:31,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-09-04 21:36:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 235 transitions. [2020-09-04 21:36:31,147 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 235 transitions. Word has length 51 [2020-09-04 21:36:31,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:36:31,147 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 235 transitions. [2020-09-04 21:36:31,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 21:36:31,148 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 235 transitions. [2020-09-04 21:36:31,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-04 21:36:31,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:36:31,154 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] [2020-09-04 21:36:31,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 21:36:31,157 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:36:31,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:36:31,157 INFO L82 PathProgramCache]: Analyzing trace with hash -16125544, now seen corresponding path program 1 times [2020-09-04 21:36:31,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:36:31,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089750483] [2020-09-04 21:36:31,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:36:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:36:31,301 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:36:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:36:31,444 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:36:31,512 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 21:36:31,512 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 21:36:31,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 21:36:31,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 09:36:31 BoogieIcfgContainer [2020-09-04 21:36:31,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 21:36:31,635 INFO L168 Benchmark]: Toolchain (without parser) took 2933.48 ms. Allocated memory was 140.5 MB in the beginning and 233.8 MB in the end (delta: 93.3 MB). Free memory was 102.9 MB in the beginning and 127.9 MB in the end (delta: -25.0 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:31,636 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 21:36:31,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.10 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 179.4 MB in the end (delta: -77.0 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:31,638 INFO L168 Benchmark]: Boogie Preprocessor took 80.97 ms. Allocated memory is still 203.9 MB. Free memory was 179.4 MB in the beginning and 176.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:31,639 INFO L168 Benchmark]: RCFGBuilder took 740.13 ms. Allocated memory is still 203.9 MB. Free memory was 176.3 MB in the beginning and 129.8 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:31,640 INFO L168 Benchmark]: TraceAbstraction took 1587.60 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 129.2 MB in the beginning and 127.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:31,644 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 519.10 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 179.4 MB in the end (delta: -77.0 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.97 ms. Allocated memory is still 203.9 MB. Free memory was 179.4 MB in the beginning and 176.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 740.13 ms. Allocated memory is still 203.9 MB. Free memory was 176.3 MB in the beginning and 129.8 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1587.60 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 129.2 MB in the beginning and 127.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 31.2 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, }; VAL [\old(one_fmod)=9223372032558759954, \old(Zero_fmod)=9223372032558759951, \old(Zero_fmod)=9223372032558759941, one_fmod=1, Zero_fmod={3:0}] [L177] double y = -1.0 / 0.0; VAL [one_fmod=1, Zero_fmod={3:0}] [L178] double x = __VERIFIER_nondet_double(); VAL [__VERIFIER_nondet_double()=9223372032558759946, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L180] CALL isfinite_double(x) VAL [\old(x)=9223372032558759946, one_fmod=1, Zero_fmod={3:0}] [L161] __int32_t hx; VAL [\old(x)=9223372032558759946, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L163] ieee_double_shape_type gh_u; VAL [\old(x)=9223372032558759946, gh_u={5:0}, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L164] gh_u.value = (x) VAL [\old(x)=9223372032558759946, gh_u={5:0}, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L165] EXPR gh_u.parts.msw VAL [\old(x)=9223372032558759946, gh_u={5:0}, gh_u.parts.msw=8589934590, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L165] (hx) = gh_u.parts.msw VAL [(hx) = gh_u.parts.msw=9223372032558759940, \old(x)=9223372032558759946, gh_u={5:0}, gh_u.parts.msw=8589934590, hx=-2, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=9223372032558759946, \result=6, hx=-2, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L180] RET isfinite_double(x) VAL [isfinite_double(x)=6, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L180] COND TRUE isfinite_double(x) VAL [isfinite_double(x)=6, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L182] CALL, EXPR fmod_double(x, y) VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, one_fmod=1, Zero_fmod={3:0}] [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L22] __uint32_t lx, ly, lz; VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L25] ieee_double_shape_type ew_u; VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={7:0}, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L26] ew_u.value = (x) VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={7:0}, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L27] EXPR ew_u.parts.msw VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={7:0}, ew_u.parts.msw=4294967292, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L27] (hx) = ew_u.parts.msw VAL [(hx) = ew_u.parts.msw=9223372032558759945, \old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={7:0}, ew_u.parts.msw=4294967292, hx=-4, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L28] EXPR ew_u.parts.lsw VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={7:0}, ew_u.parts.lsw=9223372032558759957, hx=-4, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L28] (lx) = ew_u.parts.lsw VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={7:0}, ew_u.parts.lsw=9223372032558759957, hx=-4, lx=9223372032558759957, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L31] ieee_double_shape_type ew_u; VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={2:0}, hx=-4, lx=9223372032558759957, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L32] ew_u.value = (y) VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={2:0}, hx=-4, lx=9223372032558759957, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L33] EXPR ew_u.parts.msw VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={2:0}, ew_u.parts.msw=0, hx=-4, lx=9223372032558759957, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L33] (hy) = ew_u.parts.msw VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={2:0}, ew_u.parts.msw=0, hx=-4, hy=0, lx=9223372032558759957, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L34] EXPR ew_u.parts.lsw VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={2:0}, ew_u.parts.lsw=9223372032558759948, hx=-4, hy=0, lx=9223372032558759957, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L34] (ly) = ew_u.parts.lsw VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={2:0}, ew_u.parts.lsw=9223372032558759948, hx=-4, hy=0, lx=9223372032558759957, ly=9223372032558759948, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L36] sx = hx & 0x80000000 VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, hx=-4, hy=0, lx=9223372032558759957, ly=9223372032558759948, one_fmod=1, sx=-1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L37] hx ^= sx VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, hy=0, lx=9223372032558759957, ly=9223372032558759948, one_fmod=1, sx=-1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L38] hy &= 0x7fffffff VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, lx=9223372032558759957, ly=9223372032558759948, one_fmod=1, sx=-1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, hx=2146435072, lx=9223372032558759957, ly=9223372032558759948, one_fmod=1, sx=-1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L42] return (x * y) / (x * y); VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, hx=2146435072, lx=9223372032558759957, ly=9223372032558759948, one_fmod=1, sx=-1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L182] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=9223372032558759943, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L182] double res = fmod_double(x, y); VAL [fmod_double(x, y)=9223372032558759943, one_fmod=1, res=9223372032558759943, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L185] COND TRUE res != x VAL [one_fmod=1, res=9223372032558759943, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L186] __VERIFIER_error() VAL [one_fmod=1, res=9223372032558759943, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 216 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, 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, 6 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, 0.1s 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...