/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/loop-floats-scientific-comp/loop1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:06:04,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:06:04,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:06:04,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:06:04,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:06:04,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:06:04,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:06:04,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:06:04,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:06:04,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:06:04,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:06:04,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:06:04,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:06:04,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:06:04,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:06:04,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:06:04,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:06:04,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:06:04,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:06:04,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:06:04,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:06:04,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:06:04,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:06:04,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:06:04,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:06:04,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 22:06:04,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 22:06:04,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 22:06:04,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 22:06:04,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 22:06:04,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 22:06:04,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 22:06:04,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 22:06:04,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:06:04,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:06:04,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:06:04,898 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 [2020-07-17 22:06:04,934 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:06:04,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:06:04,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:06:04,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:06:04,936 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:06:04,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:06:04,937 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:06:04,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:06:04,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:06:04,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:06:04,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:06:04,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:06:04,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:06:04,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:06:04,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:06:04,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:06:04,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:06:04,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:06:04,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:06:04,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:06:04,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:06:04,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:06:04,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:06:04,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:06:04,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:06:04,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:06:04,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:06:04,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:06:04,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:06:04,941 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:06:05,216 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:06:05,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:06:05,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:06:05,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:06:05,236 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:06:05,236 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-floats-scientific-comp/loop1-2.c [2020-07-17 22:06:05,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06a790597/2310d02625de4e1b8ab8d58dda7f098a/FLAG8ada0f8d0 [2020-07-17 22:06:05,800 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:06:05,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-floats-scientific-comp/loop1-2.c [2020-07-17 22:06:05,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06a790597/2310d02625de4e1b8ab8d58dda7f098a/FLAG8ada0f8d0 [2020-07-17 22:06:06,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06a790597/2310d02625de4e1b8ab8d58dda7f098a [2020-07-17 22:06:06,151 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:06:06,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:06:06,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:06:06,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:06:06,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:06:06,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:06:06" (1/1) ... [2020-07-17 22:06:06,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2183e6ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:06, skipping insertion in model container [2020-07-17 22:06:06,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:06:06" (1/1) ... [2020-07-17 22:06:06,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:06:06,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:06:06,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:06:06,422 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:06:06,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:06:06,458 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:06:06,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:06 WrapperNode [2020-07-17 22:06:06,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:06:06,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:06:06,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:06:06,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:06:06,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:06" (1/1) ... [2020-07-17 22:06:06,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:06" (1/1) ... [2020-07-17 22:06:06,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:06" (1/1) ... [2020-07-17 22:06:06,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:06" (1/1) ... [2020-07-17 22:06:06,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:06" (1/1) ... [2020-07-17 22:06:06,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:06" (1/1) ... [2020-07-17 22:06:06,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:06" (1/1) ... [2020-07-17 22:06:06,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:06:06,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:06:06,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:06:06,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:06:06,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:06" (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 [2020-07-17 22:06:06,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:06:06,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:06:06,642 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 22:06:06,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 22:06:06,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:06:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-17 22:06:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:06:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 22:06:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 22:06:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 22:06:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 22:06:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:06:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:06:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:06:06,925 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:06:06,926 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 22:06:06,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:06:06 BoogieIcfgContainer [2020-07-17 22:06:06,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:06:06,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:06:06,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:06:06,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:06:06,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:06:06" (1/3) ... [2020-07-17 22:06:06,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766fa4b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:06:06, skipping insertion in model container [2020-07-17 22:06:06,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:06" (2/3) ... [2020-07-17 22:06:06,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766fa4b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:06:06, skipping insertion in model container [2020-07-17 22:06:06,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:06:06" (3/3) ... [2020-07-17 22:06:06,944 INFO L109 eAbstractionObserver]: Analyzing ICFG loop1-2.c [2020-07-17 22:06:06,956 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:06:06,963 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:06:07,002 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:06:07,023 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:06:07,024 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:06:07,024 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:06:07,024 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:06:07,024 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:06:07,024 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:06:07,025 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:06:07,025 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:06:07,047 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-17 22:06:07,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 22:06:07,053 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:06:07,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:06:07,055 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:06:07,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:06:07,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1796465968, now seen corresponding path program 1 times [2020-07-17 22:06:07,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:06:07,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926955070] [2020-07-17 22:06:07,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:06:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:06:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:06:07,198 INFO L280 TraceCheckUtils]: 0: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-17 22:06:07,199 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {22#true} {22#true} #45#return; {22#true} is VALID [2020-07-17 22:06:07,202 INFO L263 TraceCheckUtils]: 0: Hoare triple {22#true} call ULTIMATE.init(); {22#true} is VALID [2020-07-17 22:06:07,202 INFO L280 TraceCheckUtils]: 1: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-17 22:06:07,203 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {22#true} {22#true} #45#return; {22#true} is VALID [2020-07-17 22:06:07,203 INFO L263 TraceCheckUtils]: 3: Hoare triple {22#true} call #t~ret3 := main(); {22#true} is VALID [2020-07-17 22:06:07,204 INFO L280 TraceCheckUtils]: 4: Hoare triple {22#true} ~x~0 := #t~nondet0;havoc #t~nondet0;~exp~0 := 1.0;~term~0 := 1.0;~count~0 := 1;~result~0 := ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(2), ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(1), ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(1), ~x~0)));havoc ~temp~0; {22#true} is VALID [2020-07-17 22:06:07,208 INFO L280 TraceCheckUtils]: 5: Hoare triple {22#true} assume false; {23#false} is VALID [2020-07-17 22:06:07,208 INFO L263 TraceCheckUtils]: 6: Hoare triple {23#false} call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~result~0, ~exp~0) then 1 else 0)); {23#false} is VALID [2020-07-17 22:06:07,209 INFO L280 TraceCheckUtils]: 7: Hoare triple {23#false} ~cond := #in~cond; {23#false} is VALID [2020-07-17 22:06:07,209 INFO L280 TraceCheckUtils]: 8: Hoare triple {23#false} assume 0 == ~cond; {23#false} is VALID [2020-07-17 22:06:07,210 INFO L280 TraceCheckUtils]: 9: Hoare triple {23#false} assume !false; {23#false} is VALID [2020-07-17 22:06:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:06:07,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926955070] [2020-07-17 22:06:07,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:06:07,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-17 22:06:07,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528452585] [2020-07-17 22:06:07,221 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-17 22:06:07,224 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:06:07,229 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-17 22:06:07,296 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:06:07,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 22:06:07,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:06:07,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 22:06:07,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 22:06:07,311 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-07-17 22:06:07,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:06:07,367 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-17 22:06:07,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 22:06:07,367 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-17 22:06:07,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:06:07,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-17 22:06:07,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 35 transitions. [2020-07-17 22:06:07,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-17 22:06:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 35 transitions. [2020-07-17 22:06:07,384 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 35 transitions. [2020-07-17 22:06:07,455 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:06:07,467 INFO L225 Difference]: With dead ends: 31 [2020-07-17 22:06:07,467 INFO L226 Difference]: Without dead ends: 12 [2020-07-17 22:06:07,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 22:06:07,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-17 22:06:07,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-17 22:06:07,524 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:06:07,525 INFO L82 GeneralOperation]: Start isEquivalent. First operand 12 states. Second operand 12 states. [2020-07-17 22:06:07,526 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2020-07-17 22:06:07,526 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2020-07-17 22:06:07,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:06:07,530 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-07-17 22:06:07,530 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-17 22:06:07,530 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:06:07,531 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:06:07,531 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2020-07-17 22:06:07,531 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2020-07-17 22:06:07,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:06:07,535 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-07-17 22:06:07,535 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-17 22:06:07,535 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:06:07,536 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:06:07,536 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:06:07,536 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:06:07,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-17 22:06:07,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-07-17 22:06:07,540 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-07-17 22:06:07,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:06:07,541 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-07-17 22:06:07,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 22:06:07,541 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-17 22:06:07,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-17 22:06:07,542 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:06:07,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:06:07,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:06:07,543 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:06:07,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:06:07,544 INFO L82 PathProgramCache]: Analyzing trace with hash -108592084, now seen corresponding path program 1 times [2020-07-17 22:06:07,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:06:07,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913696228] [2020-07-17 22:06:07,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:06:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:06:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:06:07,608 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 22:06:07,608 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 22:06:07,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:06:07,631 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:06:07,632 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:06:07,632 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:06:07,632 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-17 22:06:07,632 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-17 22:06:07,632 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-17 22:06:07,633 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:06:07,633 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:06:07,633 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:06:07,633 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-17 22:06:07,633 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-17 22:06:07,634 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-17 22:06:07,634 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-17 22:06:07,634 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-17 22:06:07,634 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2020-07-17 22:06:07,634 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2020-07-17 22:06:07,635 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:06:07,635 WARN L170 areAnnotationChecker]: L10-2 has no Hoare annotation [2020-07-17 22:06:07,635 WARN L170 areAnnotationChecker]: L25-3 has no Hoare annotation [2020-07-17 22:06:07,635 WARN L170 areAnnotationChecker]: L25-3 has no Hoare annotation [2020-07-17 22:06:07,635 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-17 22:06:07,636 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-17 22:06:07,636 WARN L170 areAnnotationChecker]: L12-1 has no Hoare annotation [2020-07-17 22:06:07,636 WARN L170 areAnnotationChecker]: L12-1 has no Hoare annotation [2020-07-17 22:06:07,636 WARN L170 areAnnotationChecker]: L12-3 has no Hoare annotation [2020-07-17 22:06:07,636 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-17 22:06:07,636 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-17 22:06:07,637 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:06:07,637 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:06:07,637 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:06:07,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:06:07 BoogieIcfgContainer [2020-07-17 22:06:07,640 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:06:07,643 INFO L168 Benchmark]: Toolchain (without parser) took 1489.57 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 104.0 MB in the beginning and 124.6 MB in the end (delta: -20.5 MB). Peak memory consumption was 43.9 MB. Max. memory is 7.1 GB. [2020-07-17 22:06:07,644 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory is still 121.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 22:06:07,645 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.75 ms. Allocated memory is still 138.9 MB. Free memory was 103.6 MB in the beginning and 93.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-17 22:06:07,646 INFO L168 Benchmark]: Boogie Preprocessor took 118.37 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 93.5 MB in the beginning and 181.1 MB in the end (delta: -87.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-17 22:06:07,647 INFO L168 Benchmark]: RCFGBuilder took 353.04 ms. Allocated memory is still 203.4 MB. Free memory was 181.1 MB in the beginning and 165.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2020-07-17 22:06:07,652 INFO L168 Benchmark]: TraceAbstraction took 707.70 ms. Allocated memory is still 203.4 MB. Free memory was 165.0 MB in the beginning and 124.6 MB in the end (delta: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 7.1 GB. [2020-07-17 22:06:07,655 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory is still 121.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 303.75 ms. Allocated memory is still 138.9 MB. Free memory was 103.6 MB in the beginning and 93.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.37 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 93.5 MB in the beginning and 181.1 MB in the end (delta: -87.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 353.04 ms. Allocated memory is still 203.4 MB. Free memory was 181.1 MB in the beginning and 165.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 707.70 ms. Allocated memory is still 203.4 MB. Free memory was 165.0 MB in the beginning and 124.6 MB in the end (delta: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 35, overapproximation of someBinaryArithmeticFLOAToperation at line 27. Possible FailurePath: [L18] float x = __VERIFIER_nondet_float() ; [L19] float exp = 1.0 ; [L20] float term = 1.0 ; [L21] unsigned int count = 1 ; [L22] float result = 2*(1/(1-x)) ; [L23] int temp ; VAL [count=1, exp=1, term=1, x=3] [L25] COND TRUE 1 [L27] term = term * (x/count) [L28] exp = exp + term [L29] count++ [L31] temp = __VERIFIER_nondet_int() [L32] COND TRUE temp ==0 VAL [count=2, temp=0, x=3] [L35] CALL __VERIFIER_assert( result >= exp ) VAL [\old(cond)=0] [L12] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L12] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 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...