/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 0.1.25-8fc6572 [2020-07-10 14:42:30,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 14:42:30,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 14:42:30,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 14:42:30,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 14:42:30,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 14:42:30,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 14:42:30,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 14:42:30,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 14:42:30,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 14:42:30,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 14:42:30,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 14:42:30,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 14:42:30,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 14:42:30,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 14:42:30,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 14:42:30,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 14:42:30,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 14:42:30,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 14:42:30,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 14:42:30,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 14:42:30,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 14:42:30,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 14:42:30,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 14:42:30,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 14:42:30,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 14:42:30,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 14:42:30,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 14:42:30,822 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 [2020-07-10 14:42:30,837 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 14:42:30,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 14:42:30,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-10 14:42:30,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-10 14:42:30,840 INFO L138 SettingsManager]: * Use SBE=true [2020-07-10 14:42:30,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 14:42:30,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 14:42:30,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 14:42:30,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 14:42:30,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 14:42:30,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 14:42:30,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 14:42:30,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 14:42:30,841 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 14:42:30,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 14:42:30,842 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 14:42:30,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 14:42:30,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 14:42:30,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-10 14:42:30,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 14:42:30,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 14:42:30,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 14:42:30,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 14:42:30,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-10 14:42:30,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-10 14:42:30,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-10 14:42:30,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-10 14:42:30,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 14:42:30,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-10 14:42:30,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-10 14:42:31,174 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 14:42:31,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 14:42:31,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 14:42:31,201 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 14:42:31,202 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 14:42:31,203 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-floats-scientific-comp/loop1-2.c [2020-07-10 14:42:31,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e78aefd6/bc503977b3614f4c8e72e275cf8c02ec/FLAG5324c11b3 [2020-07-10 14:42:31,768 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 14:42:31,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-floats-scientific-comp/loop1-2.c [2020-07-10 14:42:31,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e78aefd6/bc503977b3614f4c8e72e275cf8c02ec/FLAG5324c11b3 [2020-07-10 14:42:32,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e78aefd6/bc503977b3614f4c8e72e275cf8c02ec [2020-07-10 14:42:32,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 14:42:32,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 14:42:32,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 14:42:32,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 14:42:32,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 14:42:32,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 02:42:32" (1/1) ... [2020-07-10 14:42:32,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e5708e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:42:32, skipping insertion in model container [2020-07-10 14:42:32,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 02:42:32" (1/1) ... [2020-07-10 14:42:32,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 14:42:32,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 14:42:32,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 14:42:32,380 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 14:42:32,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 14:42:32,415 INFO L208 MainTranslator]: Completed translation [2020-07-10 14:42:32,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:42:32 WrapperNode [2020-07-10 14:42:32,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 14:42:32,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 14:42:32,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 14:42:32,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 14:42:32,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:42:32" (1/1) ... [2020-07-10 14:42:32,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:42:32" (1/1) ... [2020-07-10 14:42:32,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:42:32" (1/1) ... [2020-07-10 14:42:32,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:42:32" (1/1) ... [2020-07-10 14:42:32,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:42:32" (1/1) ... [2020-07-10 14:42:32,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:42:32" (1/1) ... [2020-07-10 14:42:32,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:42:32" (1/1) ... [2020-07-10 14:42:32,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 14:42:32,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 14:42:32,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 14:42:32,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 14:42:32,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:42:32" (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 [2020-07-10 14:42:32,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 14:42:32,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 14:42:32,610 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-10 14:42:32,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 14:42:32,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 14:42:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-10 14:42:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 14:42:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-10 14:42:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-10 14:42:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 14:42:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-10 14:42:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 14:42:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 14:42:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 14:42:32,884 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 14:42:32,885 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-10 14:42:32,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 02:42:32 BoogieIcfgContainer [2020-07-10 14:42:32,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 14:42:32,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 14:42:32,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 14:42:32,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 14:42:32,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 02:42:32" (1/3) ... [2020-07-10 14:42:32,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79011bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 02:42:32, skipping insertion in model container [2020-07-10 14:42:32,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:42:32" (2/3) ... [2020-07-10 14:42:32,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79011bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 02:42:32, skipping insertion in model container [2020-07-10 14:42:32,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 02:42:32" (3/3) ... [2020-07-10 14:42:32,899 INFO L109 eAbstractionObserver]: Analyzing ICFG loop1-2.c [2020-07-10 14:42:32,911 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-10 14:42:32,925 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 14:42:32,942 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 14:42:32,977 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 14:42:32,978 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 14:42:32,978 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-10 14:42:32,978 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 14:42:32,978 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 14:42:32,978 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 14:42:32,978 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 14:42:32,979 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 14:42:33,010 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-10 14:42:33,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-10 14:42:33,019 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 14:42:33,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 14:42:33,021 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 14:42:33,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 14:42:33,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1796465968, now seen corresponding path program 1 times [2020-07-10 14:42:33,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 14:42:33,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389837771] [2020-07-10 14:42:33,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 14:42:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 14:42:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 14:42:33,195 INFO L280 TraceCheckUtils]: 0: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-10 14:42:33,196 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {22#true} {22#true} #45#return; {22#true} is VALID [2020-07-10 14:42:33,199 INFO L263 TraceCheckUtils]: 0: Hoare triple {22#true} call ULTIMATE.init(); {22#true} is VALID [2020-07-10 14:42:33,200 INFO L280 TraceCheckUtils]: 1: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-10 14:42:33,200 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {22#true} {22#true} #45#return; {22#true} is VALID [2020-07-10 14:42:33,202 INFO L263 TraceCheckUtils]: 3: Hoare triple {22#true} call #t~ret3 := main(); {22#true} is VALID [2020-07-10 14:42:33,204 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 [2020-07-10 14:42:33,206 INFO L280 TraceCheckUtils]: 5: Hoare triple {22#true} assume false; {23#false} is VALID [2020-07-10 14:42:33,207 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 [2020-07-10 14:42:33,207 INFO L280 TraceCheckUtils]: 7: Hoare triple {23#false} ~cond := #in~cond; {23#false} is VALID [2020-07-10 14:42:33,207 INFO L280 TraceCheckUtils]: 8: Hoare triple {23#false} assume 0 == ~cond; {23#false} is VALID [2020-07-10 14:42:33,208 INFO L280 TraceCheckUtils]: 9: Hoare triple {23#false} assume !false; {23#false} is VALID [2020-07-10 14:42:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 14:42:33,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389837771] [2020-07-10 14:42:33,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 14:42:33,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-10 14:42:33,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523348762] [2020-07-10 14:42:33,224 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-10 14:42:33,229 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 14:42:33,233 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-10 14:42:33,269 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 14:42:33,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-10 14:42:33,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 14:42:33,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-10 14:42:33,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 14:42:33,284 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-07-10 14:42:33,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 14:42:33,345 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-10 14:42:33,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-10 14:42:33,346 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-10 14:42:33,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 14:42:33,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 14:42:33,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 35 transitions. [2020-07-10 14:42:33,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 14:42:33,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 35 transitions. [2020-07-10 14:42:33,361 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 35 transitions. [2020-07-10 14:42:33,468 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 14:42:33,493 INFO L225 Difference]: With dead ends: 31 [2020-07-10 14:42:33,494 INFO L226 Difference]: Without dead ends: 12 [2020-07-10 14:42:33,501 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 [2020-07-10 14:42:33,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-10 14:42:33,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-10 14:42:33,539 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 14:42:33,540 INFO L82 GeneralOperation]: Start isEquivalent. First operand 12 states. Second operand 12 states. [2020-07-10 14:42:33,540 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2020-07-10 14:42:33,541 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2020-07-10 14:42:33,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 14:42:33,544 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-07-10 14:42:33,544 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-10 14:42:33,545 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 14:42:33,545 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 14:42:33,545 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2020-07-10 14:42:33,545 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2020-07-10 14:42:33,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 14:42:33,549 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-07-10 14:42:33,549 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-10 14:42:33,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 14:42:33,550 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 14:42:33,550 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 14:42:33,550 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 14:42:33,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-10 14:42:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-07-10 14:42:33,554 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-07-10 14:42:33,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 14:42:33,555 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-07-10 14:42:33,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-10 14:42:33,555 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-10 14:42:33,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-10 14:42:33,556 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 14:42:33,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 14:42:33,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 14:42:33,557 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 14:42:33,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 14:42:33,558 INFO L82 PathProgramCache]: Analyzing trace with hash -108592084, now seen corresponding path program 1 times [2020-07-10 14:42:33,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 14:42:33,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001007004] [2020-07-10 14:42:33,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 14:42:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 14:42:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 14:42:33,625 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-10 14:42:33,625 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-10 14:42:33,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 14:42:33,645 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 14:42:33,646 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 14:42:33,646 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 14:42:33,646 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-10 14:42:33,646 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-10 14:42:33,646 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-10 14:42:33,646 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 14:42:33,647 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 14:42:33,647 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 14:42:33,647 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-10 14:42:33,647 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-10 14:42:33,647 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-10 14:42:33,648 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-10 14:42:33,648 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-10 14:42:33,648 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2020-07-10 14:42:33,648 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2020-07-10 14:42:33,648 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 14:42:33,648 WARN L170 areAnnotationChecker]: L10-2 has no Hoare annotation [2020-07-10 14:42:33,649 WARN L170 areAnnotationChecker]: L25-3 has no Hoare annotation [2020-07-10 14:42:33,649 WARN L170 areAnnotationChecker]: L25-3 has no Hoare annotation [2020-07-10 14:42:33,649 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-10 14:42:33,649 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-10 14:42:33,649 WARN L170 areAnnotationChecker]: L12-1 has no Hoare annotation [2020-07-10 14:42:33,649 WARN L170 areAnnotationChecker]: L12-1 has no Hoare annotation [2020-07-10 14:42:33,649 WARN L170 areAnnotationChecker]: L12-3 has no Hoare annotation [2020-07-10 14:42:33,649 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-10 14:42:33,649 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 14:42:33,650 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 14:42:33,650 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-10 14:42:33,650 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. [2020-07-10 14:42:33,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 02:42:33 BoogieIcfgContainer [2020-07-10 14:42:33,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 14:42:33,656 INFO L168 Benchmark]: Toolchain (without parser) took 1504.97 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 100.6 MB in the beginning and 120.7 MB in the end (delta: -20.1 MB). Peak memory consumption was 43.9 MB. Max. memory is 7.1 GB. [2020-07-10 14:42:33,657 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-10 14:42:33,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.93 ms. Allocated memory is still 135.8 MB. Free memory was 100.4 MB in the beginning and 90.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-10 14:42:33,659 INFO L168 Benchmark]: Boogie Preprocessor took 120.18 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 90.4 MB in the beginning and 178.2 MB in the end (delta: -87.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-10 14:42:33,659 INFO L168 Benchmark]: RCFGBuilder took 352.67 ms. Allocated memory is still 199.8 MB. Free memory was 178.2 MB in the beginning and 161.3 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-07-10 14:42:33,660 INFO L168 Benchmark]: TraceAbstraction took 762.08 ms. Allocated memory is still 199.8 MB. Free memory was 161.3 MB in the beginning and 120.7 MB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. [2020-07-10 14:42:33,664 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 0.26 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 263.93 ms. Allocated memory is still 135.8 MB. Free memory was 100.4 MB in the beginning and 90.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.18 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 90.4 MB in the beginning and 178.2 MB in the end (delta: -87.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 352.67 ms. Allocated memory is still 199.8 MB. Free memory was 178.2 MB in the beginning and 161.3 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 762.08 ms. Allocated memory is still 199.8 MB. Free memory was 161.3 MB in the beginning and 120.7 MB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 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: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, 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...