/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:45:36,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:45:36,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:45:36,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:45:36,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:45:36,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:45:36,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:45:36,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:45:36,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:45:36,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:45:36,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:45:36,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:45:36,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:45:36,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:45:36,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:45:36,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:45:36,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:45:36,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:45:36,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:45:36,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:45:36,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:45:36,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:45:36,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:45:36,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:45:36,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:45:36,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:45:36,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:45:36,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:45:36,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:45:36,921 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:45:36,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:45:36,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:45:36,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:45:36,925 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:45:36,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:45:36,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:45:36,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:45:36,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:45:36,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:45:36,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:45:36,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:45:36,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:45:36,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:45:36,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:45:36,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:45:36,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:45:36,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:45:36,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:45:36,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:45:36,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:45:36,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:45:36,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:45:36,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:45:36,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:45:36,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:45:37,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:45:37,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:45:37,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:45:37,466 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:45:37,467 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:45:37,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2020-12-22 03:45:37,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c96fc373/4c84a4958f9a46a1beeff933efa81b5e/FLAG11b352cf5 [2020-12-22 03:45:38,214 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:45:38,215 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2020-12-22 03:45:38,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c96fc373/4c84a4958f9a46a1beeff933efa81b5e/FLAG11b352cf5 [2020-12-22 03:45:38,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c96fc373/4c84a4958f9a46a1beeff933efa81b5e [2020-12-22 03:45:38,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:45:38,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:45:38,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:45:38,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:45:38,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:45:38,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:45:38" (1/1) ... [2020-12-22 03:45:38,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a9e3e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:38, skipping insertion in model container [2020-12-22 03:45:38,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:45:38" (1/1) ... [2020-12-22 03:45:38,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:45:38,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:45:38,818 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730a.c[3437,3450] [2020-12-22 03:45:38,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:45:38,830 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:45:38,874 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730a.c[3437,3450] [2020-12-22 03:45:38,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:45:38,891 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:45:38,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:38 WrapperNode [2020-12-22 03:45:38,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:45:38,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:45:38,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:45:38,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:45:38,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:38" (1/1) ... [2020-12-22 03:45:38,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:38" (1/1) ... [2020-12-22 03:45:38,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:45:38,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:45:38,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:45:38,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:45:38,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:38" (1/1) ... [2020-12-22 03:45:38,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:38" (1/1) ... [2020-12-22 03:45:38,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:38" (1/1) ... [2020-12-22 03:45:38,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:38" (1/1) ... [2020-12-22 03:45:38,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:38" (1/1) ... [2020-12-22 03:45:38,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:38" (1/1) ... [2020-12-22 03:45:38,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:38" (1/1) ... [2020-12-22 03:45:38,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:45:38,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:45:38,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:45:38,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:45:38,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:38" (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 [2020-12-22 03:45:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:45:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:45:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:45:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:45:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:45:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:45:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:45:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:45:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:45:39,635 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:45:39,635 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-22 03:45:39,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:45:39 BoogieIcfgContainer [2020-12-22 03:45:39,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:45:39,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:45:39,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:45:39,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:45:39,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:45:38" (1/3) ... [2020-12-22 03:45:39,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38733c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:45:39, skipping insertion in model container [2020-12-22 03:45:39,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:38" (2/3) ... [2020-12-22 03:45:39,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38733c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:45:39, skipping insertion in model container [2020-12-22 03:45:39,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:45:39" (3/3) ... [2020-12-22 03:45:39,649 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2020-12-22 03:45:39,660 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:45:39,666 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:45:39,685 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:45:39,731 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:45:39,731 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:45:39,732 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:45:39,732 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:45:39,732 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:45:39,732 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:45:39,732 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:45:39,733 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:45:39,753 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-12-22 03:45:39,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 03:45:39,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:45:39,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:45:39,760 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:45:39,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:45:39,768 INFO L82 PathProgramCache]: Analyzing trace with hash -898135563, now seen corresponding path program 1 times [2020-12-22 03:45:39,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:45:39,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899150823] [2020-12-22 03:45:39,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:45:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:45:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:45:39,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899150823] [2020-12-22 03:45:39,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:45:39,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:45:39,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348481893] [2020-12-22 03:45:39,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:45:39,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:45:40,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:45:40,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:45:40,014 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2020-12-22 03:45:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:45:40,053 INFO L93 Difference]: Finished difference Result 102 states and 162 transitions. [2020-12-22 03:45:40,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:45:40,055 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 03:45:40,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:45:40,072 INFO L225 Difference]: With dead ends: 102 [2020-12-22 03:45:40,072 INFO L226 Difference]: Without dead ends: 49 [2020-12-22 03:45:40,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:45:40,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-22 03:45:40,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-12-22 03:45:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 03:45:40,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 68 transitions. [2020-12-22 03:45:40,113 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 68 transitions. Word has length 10 [2020-12-22 03:45:40,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:45:40,114 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 68 transitions. [2020-12-22 03:45:40,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:45:40,114 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 68 transitions. [2020-12-22 03:45:40,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 03:45:40,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:45:40,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:45:40,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:45:40,116 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:45:40,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:45:40,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1657561708, now seen corresponding path program 1 times [2020-12-22 03:45:40,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:45:40,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017387102] [2020-12-22 03:45:40,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:45:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:45:40,219 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:45:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:45:40,322 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:45:40,352 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:45:40,353 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:45:40,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:45:40,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:45:40 BoogieIcfgContainer [2020-12-22 03:45:40,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:45:40,391 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:45:40,391 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:45:40,392 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:45:40,392 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:45:39" (3/4) ... [2020-12-22 03:45:40,396 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:45:40,396 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:45:40,399 INFO L168 Benchmark]: Toolchain (without parser) took 1811.53 ms. Allocated memory is still 172.0 MB. Free memory was 146.9 MB in the beginning and 113.1 MB in the end (delta: 33.8 MB). Peak memory consumption was 34.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:45:40,399 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 172.0 MB. Free memory is still 148.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:45:40,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.21 ms. Allocated memory is still 172.0 MB. Free memory was 146.7 MB in the beginning and 134.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:45:40,401 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.81 ms. Allocated memory is still 172.0 MB. Free memory was 134.3 MB in the beginning and 132.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:45:40,402 INFO L168 Benchmark]: Boogie Preprocessor took 36.95 ms. Allocated memory is still 172.0 MB. Free memory was 132.0 MB in the beginning and 130.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:45:40,403 INFO L168 Benchmark]: RCFGBuilder took 654.96 ms. Allocated memory is still 172.0 MB. Free memory was 130.1 MB in the beginning and 140.9 MB in the end (delta: -10.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:45:40,404 INFO L168 Benchmark]: TraceAbstraction took 749.41 ms. Allocated memory is still 172.0 MB. Free memory was 140.4 MB in the beginning and 113.6 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-12-22 03:45:40,404 INFO L168 Benchmark]: Witness Printer took 5.11 ms. Allocated memory is still 172.0 MB. Free memory is still 113.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:45:40,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 172.0 MB. Free memory is still 148.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 304.21 ms. Allocated memory is still 172.0 MB. Free memory was 146.7 MB in the beginning and 134.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.81 ms. Allocated memory is still 172.0 MB. Free memory was 134.3 MB in the beginning and 132.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.95 ms. Allocated memory is still 172.0 MB. Free memory was 132.0 MB in the beginning and 130.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 654.96 ms. Allocated memory is still 172.0 MB. Free memory was 130.1 MB in the beginning and 140.9 MB in the end (delta: -10.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 749.41 ms. Allocated memory is still 172.0 MB. Free memory was 140.4 MB in the beginning and 113.6 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * Witness Printer took 5.11 ms. Allocated memory is still 172.0 MB. Free memory is still 113.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 162]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 144, overapproximation of someBinaryArithmeticDOUBLEoperation at line 38, overapproximation of bitwiseAnd at line 143. Possible FailurePath: [L22] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L157] double x = 1.0 / 0.0; [L25] double z; [L26] __int32_t sign = 0x80000000; [L27] __uint32_t r, t1, s1, ix1, q1; [L28] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (x) [L33] EXPR ew_u.parts.msw [L33] (ix0) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ix1) = ew_u.parts.lsw [L37] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L38] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L158] double res = __ieee754_sqrt(x); [L136] __int32_t hx, lx; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L138] ieee_double_shape_type ew_u; [L139] ew_u.value = (x) [L140] EXPR ew_u.parts.msw [L140] (hx) = ew_u.parts.msw [L141] EXPR ew_u.parts.lsw [L141] (lx) = ew_u.parts.lsw [L143] hx &= 0x7fffffff [L144] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L145] hx = 0x7ff00000 - hx [L146] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L161] COND TRUE !isinf_double(res) [L162] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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...