/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -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 0.2.0-7d8eed3 [2020-11-06 21:57:31,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:57:31,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:57:31,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 21:57:31,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 21:57:31,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 21:57:31,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 21:57:31,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 21:57:31,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 21:57:31,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 21:57:31,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 21:57:31,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 21:57:31,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:57:31,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:57:31,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:57:31,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:57:31,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:57:31,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:57:31,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:57:31,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:57:31,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:57:31,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:57:31,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:57:31,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:57:31,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 21:57:31,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:57:31,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:57:31,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:57:31,632 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 21:57:31,694 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:57:31,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:57:31,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:57:31,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:57:31,700 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:57:31,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:57:31,700 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:57:31,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:57:31,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:57:31,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:57:31,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:57:31,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:57:31,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:57:31,703 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:57:31,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:57:31,704 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:57:31,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:57:31,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:57:31,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:57:31,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:57:31,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:57:31,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:57:31,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:57:31,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:57:31,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:57:31,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:57:31,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:57:31,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:57:31,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:57:31,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:57:32,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:57:32,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:57:32,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:57:32,230 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:57:32,230 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:57:32,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-11-06 21:57:32,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20ffa170d/fd8fd49418534774a8c165af9881f480/FLAGba0fbcd60 [2020-11-06 21:57:32,967 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:57:32,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-11-06 21:57:32,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20ffa170d/fd8fd49418534774a8c165af9881f480/FLAGba0fbcd60 [2020-11-06 21:57:33,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20ffa170d/fd8fd49418534774a8c165af9881f480 [2020-11-06 21:57:33,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:57:33,312 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:57:33,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:33,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:57:33,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:57:33,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:33" (1/1) ... [2020-11-06 21:57:33,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8dd8b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33, skipping insertion in model container [2020-11-06 21:57:33,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:33" (1/1) ... [2020-11-06 21:57:33,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:57:33,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:57:33,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:33,621 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:57:33,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:33,757 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:57:33,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33 WrapperNode [2020-11-06 21:57:33,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:33,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:57:33,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:57:33,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:57:33,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2020-11-06 21:57:33,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2020-11-06 21:57:33,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2020-11-06 21:57:33,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2020-11-06 21:57:33,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2020-11-06 21:57:33,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2020-11-06 21:57:33,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2020-11-06 21:57:33,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:57:33,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:57:33,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:57:33,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:57:33,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-11-06 21:57:33,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:57:33,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:57:33,990 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:57:33,990 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-11-06 21:57:33,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-11-06 21:57:33,991 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:57:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:57:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:57:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:57:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:57:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-11-06 21:57:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-11-06 21:57:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-06 21:57:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:57:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:57:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-06 21:57:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:57:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-11-06 21:57:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:57:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:57:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:57:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-06 21:57:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:57:34,989 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:57:34,989 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-06 21:57:34,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:34 BoogieIcfgContainer [2020-11-06 21:57:34,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:57:34,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:57:34,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:57:34,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:57:34,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:33" (1/3) ... [2020-11-06 21:57:34,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfc2640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:34, skipping insertion in model container [2020-11-06 21:57:34,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (2/3) ... [2020-11-06 21:57:34,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfc2640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:34, skipping insertion in model container [2020-11-06 21:57:34,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:34" (3/3) ... [2020-11-06 21:57:35,001 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-11-06 21:57:35,015 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:57:35,019 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:57:35,032 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:57:35,060 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:57:35,061 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:57:35,061 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:57:35,061 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:57:35,061 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:57:35,061 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:57:35,061 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:57:35,062 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:57:35,082 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2020-11-06 21:57:35,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-06 21:57:35,089 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:35,090 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] [2020-11-06 21:57:35,091 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:35,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:35,097 INFO L82 PathProgramCache]: Analyzing trace with hash 376373771, now seen corresponding path program 1 times [2020-11-06 21:57:35,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:35,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530897189] [2020-11-06 21:57:35,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:35,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:57:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:35,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 21:57:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:35,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-06 21:57:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:57:35,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530897189] [2020-11-06 21:57:35,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:57:35,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:57:35,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821647914] [2020-11-06 21:57:35,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:57:35,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:57:35,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:57:35,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:57:35,454 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 4 states. [2020-11-06 21:57:35,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:57:35,973 INFO L93 Difference]: Finished difference Result 143 states and 233 transitions. [2020-11-06 21:57:35,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 21:57:35,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-06 21:57:35,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:57:35,984 INFO L225 Difference]: With dead ends: 143 [2020-11-06 21:57:35,984 INFO L226 Difference]: Without dead ends: 69 [2020-11-06 21:57:35,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 21:57:36,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-06 21:57:36,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-11-06 21:57:36,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-06 21:57:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 95 transitions. [2020-11-06 21:57:36,058 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 95 transitions. Word has length 26 [2020-11-06 21:57:36,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:57:36,058 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 95 transitions. [2020-11-06 21:57:36,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:57:36,059 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 95 transitions. [2020-11-06 21:57:36,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-06 21:57:36,060 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:36,060 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] [2020-11-06 21:57:36,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:57:36,061 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:36,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:36,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1407820190, now seen corresponding path program 1 times [2020-11-06 21:57:36,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:36,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84331118] [2020-11-06 21:57:36,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:36,240 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:36,384 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:36,422 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:57:36,422 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:57:36,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 21:57:36,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:57:36 BoogieIcfgContainer [2020-11-06 21:57:36,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:57:36,468 INFO L168 Benchmark]: Toolchain (without parser) took 3159.41 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 119.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:36,469 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 153.1 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:57:36,470 INFO L168 Benchmark]: CACSL2BoogieTranslator took 445.88 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 114.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:36,471 INFO L168 Benchmark]: Boogie Preprocessor took 133.95 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 112.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:36,472 INFO L168 Benchmark]: RCFGBuilder took 1097.04 ms. Allocated memory is still 153.1 MB. Free memory was 112.1 MB in the beginning and 110.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:36,472 INFO L168 Benchmark]: TraceAbstraction took 1471.88 ms. Allocated memory is still 153.1 MB. Free memory was 109.7 MB in the beginning and 119.4 MB in the end (delta: -9.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:57:36,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 153.1 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 445.88 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 114.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 133.95 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 112.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1097.04 ms. Allocated memory is still 153.1 MB. Free memory was 112.1 MB in the beginning and 110.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1471.88 ms. Allocated memory is still 153.1 MB. Free memory was 109.7 MB in the beginning and 119.4 MB in the end (delta: -9.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 43, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 187, overapproximation of bitwiseXor at line 39. Possible FailurePath: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=9223372034706243607, \old(Zero_fmod)=9223372034706243604, \old(Zero_fmod)=9223372034706243598, one_fmod=1, Zero_fmod={5:0}] [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L182] CALL isfinite_double(x) VAL [\old(x)=9223372034706243597, one_fmod=1, Zero_fmod={5:0}] [L163] __int32_t hx; VAL [\old(x)=9223372034706243597, one_fmod=1, x=9223372034706243597, Zero_fmod={5:0}] [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=9223372034706243597, \result=-2, hx=0, one_fmod=1, x=9223372034706243597, Zero_fmod={5:0}] [L182] RET isfinite_double(x) VAL [isfinite_double(x)=-2, one_fmod=1, x=9223372034706243597, Zero_fmod={5:0}] [L182] COND TRUE isfinite_double(x) [L184] CALL, EXPR fmod_double(x, y) VAL [\old(x)=9223372034706243597, \old(y)=9223372034706243593, one_fmod=1, Zero_fmod={5:0}] [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; VAL [\old(x)=9223372034706243597, \old(y)=9223372034706243593, one_fmod=1, x=9223372034706243597, y=9223372034706243593, Zero_fmod={5:0}] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff VAL [\old(x)=9223372034706243597, \old(y)=9223372034706243593, lx=9223372034706243605, ly=9223372034706243586, one_fmod=1, sx=-1, x=9223372034706243597, y=9223372034706243593, Zero_fmod={5:0}] [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); VAL [\old(x)=9223372034706243597, \old(y)=9223372034706243593, hx=2146435072, lx=9223372034706243605, ly=9223372034706243586, one_fmod=1, sx=-1, x=9223372034706243597, y=9223372034706243593, Zero_fmod={5:0}] [L184] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=9223372034706243602, one_fmod=1, x=9223372034706243597, y=9223372034706243593, Zero_fmod={5:0}] [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x VAL [one_fmod=1, res=9223372034706243602, x=9223372034706243597, y=9223372034706243593, Zero_fmod={5:0}] [L188] CALL reach_error() VAL [one_fmod=1, Zero_fmod={5:0}] [L3] __assert_fail("0", "double_req_bl_1131b.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 98 SDtfs, 8 SDslu, 86 SDs, 0 SdLazy, 101 SolverSat, 8 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 2200 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...