/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 --traceabstraction.use.minimal.unsat.core.enumeration false -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 0.1.25-5644d1e-m [2020-08-18 15:25:39,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:25:39,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:25:39,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:25:39,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:25:39,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:25:39,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:25:39,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:25:39,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:25:39,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:25:39,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:25:39,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:25:39,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:25:39,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:25:39,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:25:39,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:25:39,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:25:39,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:25:39,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:25:39,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:25:39,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:25:39,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:25:39,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:25:39,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:25:39,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 15:25:39,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:25:39,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:25:39,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:25:39,627 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 [2020-08-18 15:25:39,671 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:25:39,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:25:39,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:25:39,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:25:39,673 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:25:39,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:25:39,674 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:25:39,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:25:39,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:25:39,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:25:39,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:25:39,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:25:39,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:25:39,675 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:25:39,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:25:39,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:25:39,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:25:39,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:25:39,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:25:39,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:25:39,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:25:39,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:25:39,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:25:39,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:25:39,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:25:39,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:25:39,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:25:39,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:25:39,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:25:39,679 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.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 15:25:39,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:25:40,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:25:40,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:25:40,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:25:40,015 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:25:40,016 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-18 15:25:40,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d2fe8508/dc409a12954641e68c5d58dde561cfc4/FLAG6df154234 [2020-08-18 15:25:40,547 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:25:40,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-18 15:25:40,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d2fe8508/dc409a12954641e68c5d58dde561cfc4/FLAG6df154234 [2020-08-18 15:25:40,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d2fe8508/dc409a12954641e68c5d58dde561cfc4 [2020-08-18 15:25:40,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:25:40,929 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:25:40,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:25:40,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:25:40,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:25:40,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:25:40" (1/1) ... [2020-08-18 15:25:40,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f15c313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:40, skipping insertion in model container [2020-08-18 15:25:40,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:25:40" (1/1) ... [2020-08-18 15:25:40,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:25:40,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:25:41,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:25:41,297 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:25:41,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:25:41,403 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:25:41,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41 WrapperNode [2020-08-18 15:25:41,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:25:41,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:25:41,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:25:41,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:25:41,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (1/1) ... [2020-08-18 15:25:41,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (1/1) ... [2020-08-18 15:25:41,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (1/1) ... [2020-08-18 15:25:41,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (1/1) ... [2020-08-18 15:25:41,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (1/1) ... [2020-08-18 15:25:41,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (1/1) ... [2020-08-18 15:25:41,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (1/1) ... [2020-08-18 15:25:41,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:25:41,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:25:41,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:25:41,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:25:41,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (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 [2020-08-18 15:25:41,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:25:41,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:25:41,525 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-18 15:25:41,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-18 15:25:41,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:25:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:25:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 15:25:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-18 15:25:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:25:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 15:25:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:25:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:25:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 15:25:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:25:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-18 15:25:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:25:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:25:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 15:25:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:25:42,240 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:25:42,240 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-18 15:25:42,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:25:42 BoogieIcfgContainer [2020-08-18 15:25:42,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:25:42,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:25:42,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:25:42,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:25:42,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:25:40" (1/3) ... [2020-08-18 15:25:42,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e615cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:25:42, skipping insertion in model container [2020-08-18 15:25:42,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (2/3) ... [2020-08-18 15:25:42,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e615cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:25:42, skipping insertion in model container [2020-08-18 15:25:42,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:25:42" (3/3) ... [2020-08-18 15:25:42,255 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-08-18 15:25:42,266 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:25:42,275 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:25:42,287 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:25:42,311 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:25:42,312 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:25:42,312 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:25:42,312 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:25:42,312 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:25:42,312 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:25:42,312 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:25:42,313 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:25:42,332 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-18 15:25:42,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 15:25:42,339 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:25:42,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:25:42,341 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:25:42,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:25:42,346 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-08-18 15:25:42,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:25:42,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361364386] [2020-08-18 15:25:42,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:25:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:42,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:25:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:42,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:25:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:42,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 15:25:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:25:42,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361364386] [2020-08-18 15:25:42,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:25:42,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:25:42,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548077543] [2020-08-18 15:25:42,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:25:42,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:25:42,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:25:42,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:25:42,633 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-18 15:25:43,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:25:43,001 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-18 15:25:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:25:43,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 15:25:43,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:25:43,017 INFO L225 Difference]: With dead ends: 138 [2020-08-18 15:25:43,018 INFO L226 Difference]: Without dead ends: 68 [2020-08-18 15:25:43,023 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 [2020-08-18 15:25:43,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-18 15:25:43,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-18 15:25:43,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-18 15:25:43,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-18 15:25:43,076 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-18 15:25:43,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:25:43,076 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-18 15:25:43,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:25:43,077 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-18 15:25:43,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 15:25:43,078 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:25:43,078 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] [2020-08-18 15:25:43,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:25:43,079 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:25:43,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:25:43,080 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-08-18 15:25:43,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:25:43,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482920923] [2020-08-18 15:25:43,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:25:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 15:25:43,195 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 15:25:43,195 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 15:25:43,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:25:43,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:25:43 BoogieIcfgContainer [2020-08-18 15:25:43,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:25:43,223 INFO L168 Benchmark]: Toolchain (without parser) took 2293.94 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 102.4 MB in the beginning and 193.4 MB in the end (delta: -91.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:43,224 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 15:25:43,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.55 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.2 MB in the beginning and 178.5 MB in the end (delta: -76.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:43,226 INFO L168 Benchmark]: Boogie Preprocessor took 62.28 ms. Allocated memory is still 203.9 MB. Free memory was 178.5 MB in the beginning and 175.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:43,227 INFO L168 Benchmark]: RCFGBuilder took 778.18 ms. Allocated memory is still 203.9 MB. Free memory was 175.6 MB in the beginning and 140.6 MB in the end (delta: 35.0 MB). Peak memory consumption was 35.0 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:43,228 INFO L168 Benchmark]: TraceAbstraction took 973.27 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 139.9 MB in the beginning and 193.4 MB in the end (delta: -53.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 15:25:43,232 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 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 474.55 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.2 MB in the beginning and 178.5 MB in the end (delta: -76.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.28 ms. Allocated memory is still 203.9 MB. Free memory was 178.5 MB in the beginning and 175.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 778.18 ms. Allocated memory is still 203.9 MB. Free memory was 175.6 MB in the beginning and 140.6 MB in the end (delta: 35.0 MB). Peak memory consumption was 35.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 973.27 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 139.9 MB in the beginning and 193.4 MB in the end (delta: -53.5 MB). There was no memory consumed. 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 36, 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, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=73occurred 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, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 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...