/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 15:21:55,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 15:21:55,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 15:21:55,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 15:21:55,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 15:21:55,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 15:21:55,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 15:21:55,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 15:21:55,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 15:21:55,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 15:21:55,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 15:21:55,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 15:21:55,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 15:21:55,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 15:21:55,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 15:21:55,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 15:21:55,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 15:21:55,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 15:21:55,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 15:21:55,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 15:21:55,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 15:21:55,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 15:21:55,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 15:21:55,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 15:21:55,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 15:21:55,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 15:21:55,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 15:21:55,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 15:21:55,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 15:21:55,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 15:21:55,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 15:21:55,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 15:21:55,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 15:21:55,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 15:21:55,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 15:21:55,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 15:21:55,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 15:21:55,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 15:21:55,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 15:21:55,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 15:21:55,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 15:21:55,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 15:21:55,689 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 15:21:55,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 15:21:55,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 15:21:55,692 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 15:21:55,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 15:21:55,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 15:21:55,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 15:21:55,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 15:21:55,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 15:21:55,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 15:21:55,694 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 15:21:55,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 15:21:55,694 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 15:21:55,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 15:21:55,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 15:21:55,695 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 15:21:55,696 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 15:21:55,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 15:21:55,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 15:21:55,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 15:21:55,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 15:21:55,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 15:21:55,697 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation [2020-07-07 15:21:55,968 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 15:21:55,988 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 15:21:55,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 15:21:55,993 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 15:21:55,994 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 15:21:55,994 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-07-07 15:21:56,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ec267e84/c9c0d920de8d40ba8c38a4357393ef37/FLAG0f1dd95e3 [2020-07-07 15:21:56,553 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 15:21:56,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-07-07 15:21:56,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ec267e84/c9c0d920de8d40ba8c38a4357393ef37/FLAG0f1dd95e3 [2020-07-07 15:21:56,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ec267e84/c9c0d920de8d40ba8c38a4357393ef37 [2020-07-07 15:21:56,923 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 15:21:56,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 15:21:56,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 15:21:56,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 15:21:56,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 15:21:56,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 03:21:56" (1/1) ... [2020-07-07 15:21:56,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ab632c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:56, skipping insertion in model container [2020-07-07 15:21:56,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 03:21:56" (1/1) ... [2020-07-07 15:21:56,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 15:21:56,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 15:21:57,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 15:21:57,200 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 15:21:57,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 15:21:57,341 INFO L208 MainTranslator]: Completed translation [2020-07-07 15:21:57,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:57 WrapperNode [2020-07-07 15:21:57,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 15:21:57,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 15:21:57,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 15:21:57,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 15:21:57,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:57" (1/1) ... [2020-07-07 15:21:57,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:57" (1/1) ... [2020-07-07 15:21:57,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:57" (1/1) ... [2020-07-07 15:21:57,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:57" (1/1) ... [2020-07-07 15:21:57,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:57" (1/1) ... [2020-07-07 15:21:57,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:57" (1/1) ... [2020-07-07 15:21:57,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:57" (1/1) ... [2020-07-07 15:21:57,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 15:21:57,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 15:21:57,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 15:21:57,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 15:21:57,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:57" (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 [2020-07-07 15:21:57,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 15:21:57,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 15:21:57,450 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 15:21:57,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 15:21:57,451 INFO L138 BoogieDeclarations]: Found implementation of procedure sqrt_custom [2020-07-07 15:21:57,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 15:21:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 15:21:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-07 15:21:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 15:21:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 15:21:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 15:21:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure sqrt_custom [2020-07-07 15:21:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 15:21:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-07 15:21:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 15:21:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 15:21:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-07 15:21:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 15:21:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 15:21:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 15:21:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 15:21:57,837 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 15:21:57,838 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 15:21:57,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 03:21:57 BoogieIcfgContainer [2020-07-07 15:21:57,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 15:21:57,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 15:21:57,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 15:21:57,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 15:21:57,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 03:21:56" (1/3) ... [2020-07-07 15:21:57,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@164d2272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 03:21:57, skipping insertion in model container [2020-07-07 15:21:57,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:57" (2/3) ... [2020-07-07 15:21:57,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@164d2272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 03:21:57, skipping insertion in model container [2020-07-07 15:21:57,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 03:21:57" (3/3) ... [2020-07-07 15:21:57,850 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2020-07-07 15:21:57,860 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 15:21:57,867 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 15:21:57,880 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 15:21:57,897 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 15:21:57,897 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 15:21:57,897 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-07 15:21:57,897 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 15:21:57,897 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 15:21:57,898 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 15:21:57,898 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 15:21:57,898 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 15:21:57,913 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-07-07 15:21:57,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-07 15:21:57,924 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 15:21:57,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 15:21:57,926 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 15:21:57,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 15:21:57,932 INFO L82 PathProgramCache]: Analyzing trace with hash 284093711, now seen corresponding path program 1 times [2020-07-07 15:21:57,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 15:21:57,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940943406] [2020-07-07 15:21:57,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 15:21:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 15:21:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 15:21:58,104 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 15:21:58,105 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 15:21:58,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 03:21:58 BoogieIcfgContainer [2020-07-07 15:21:58,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 15:21:58,177 INFO L168 Benchmark]: Toolchain (without parser) took 1250.73 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 102.3 MB in the beginning and 134.3 MB in the end (delta: -32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2020-07-07 15:21:58,178 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 138.4 MB. Free memory is still 120.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-07 15:21:58,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.67 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 181.1 MB in the end (delta: -79.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-07-07 15:21:58,182 INFO L168 Benchmark]: Boogie Preprocessor took 50.05 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 178.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-07-07 15:21:58,184 INFO L168 Benchmark]: RCFGBuilder took 450.38 ms. Allocated memory is still 202.4 MB. Free memory was 178.7 MB in the beginning and 157.4 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-07-07 15:21:58,186 INFO L168 Benchmark]: TraceAbstraction took 329.94 ms. Allocated memory is still 202.4 MB. Free memory was 157.4 MB in the beginning and 134.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-07-07 15:21:58,196 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 138.4 MB. Free memory is still 120.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 415.67 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 181.1 MB in the end (delta: -79.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.05 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 178.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.38 ms. Allocated memory is still 202.4 MB. Free memory was 178.7 MB in the beginning and 157.4 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 329.94 ms. Allocated memory is still 202.4 MB. Free memory was 157.4 MB in the beginning and 134.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 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 bitwiseOr at line 36, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 35, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of someBinaryDOUBLEComparisonOperation at line 63. Possible FailurePath: [L15] double C0 = 1.414213538; VAL [\old(C0)=4, \old(C1)=5, \old(C2)=2, \old(C3)=0, \old(C4)=1, \old(C5)=3, C0=707106769/500000000, C1=5, C2=2, C3=0, C4=1, C5=3] [L16] double C1 = 0.229761391; VAL [\old(C0)=4, \old(C1)=5, \old(C2)=2, \old(C3)=0, \old(C4)=1, \old(C5)=3, C0=707106769/500000000, C1=229761391/1000000000, C2=2, C3=0, C4=1, C5=3] [L17] double C2 = 1.296735525; VAL [\old(C0)=4, \old(C1)=5, \old(C2)=2, \old(C3)=0, \old(C4)=1, \old(C5)=3, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C3=0, C4=1, C5=3] [L18] double C3 = -0.901098370; VAL [\old(C0)=4, \old(C1)=5, \old(C2)=2, \old(C3)=0, \old(C4)=1, \old(C5)=3, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=1, C5=3] [L19] double C4 = 0.493553400; VAL [\old(C0)=4, \old(C1)=5, \old(C2)=2, \old(C3)=0, \old(C4)=1, \old(C5)=3, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, C5=3] [L20] double C5 = -0.118958666; VAL [\old(C0)=4, \old(C1)=5, \old(C2)=2, \old(C3)=0, \old(C4)=1, \old(C5)=3, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L56] double x,y; VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L58] x = __VERIFIER_nondet_double() VAL [__VERIFIER_nondet_double()=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, x=15] [L59] CALL assume_abort_if_not(x >= 1. && x <= 1e10) VAL [\old(cond)=1, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L10] COND FALSE !(!cond) VAL [\old(cond)=1, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=1] [L59] RET assume_abort_if_not(x >= 1. && x <= 1e10) VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, x=15] [L61] CALL, EXPR sqrt_custom(x) VAL [\old(a)=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L29] union u x; VAL [\old(a)=15, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, x={2:0}] [L30] double r; VAL [\old(a)=15, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, x={2:0}] [L31] int exp; VAL [\old(a)=15, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, x={2:0}] [L33] x.d = a VAL [\old(a)=15, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, x={2:0}] [L35] EXPR x.i[0] VAL [\old(a)=15, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, x={2:0}, x.i[0]=10] [L35] exp = (x.i[0] & 0x7FF00000) >> 20 VAL [\old(a)=15, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=3, x={2:0}, x.i[0]=10] [L36] EXPR x.i[0] VAL [\old(a)=15, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=3, x={2:0}, x.i[0]=14] [L36] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 VAL [\old(a)=15, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=3, x={2:0}, x.i[0]=14] [L37] EXPR x.d VAL [\old(a)=15, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=3, x={2:0}, x.d=13] [L37] r = x.d * 0.5 VAL [\old(a)=15, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=3, x={2:0}, x.d=13] [L39] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [\old(a)=15, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=3, x={2:0}] [L41] COND FALSE !(exp % 2 == 0) VAL [\old(a)=15, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=3, x={2:0}] [L45] r = r * C0 VAL [\old(a)=15, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=3, x={2:0}] [L48] x.i[0] = (exp/2 + 511) << 20 VAL [\old(a)=15, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=3, x={2:0}] [L49] EXPR x.d VAL [\old(a)=15, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=3, x={2:0}, x.d=10] [L49] r = r * x.d VAL [\old(a)=15, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=3, x={2:0}, x.d=10] [L51] return r; VAL [\old(a)=15, \result=17, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=3, r=17, x={2:0}] [L51] return r; VAL [\old(a)=15, \result=17, a=15, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=3, r=17] [L61] RET, EXPR sqrt_custom(x) VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, sqrt_custom(x)=17, x=15] [L61] y = sqrt_custom(x) VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, sqrt_custom(x)=17, x=15, y=17] [L63] CALL __VERIFIER_assert(y >= 0. && y <= 1e6) VAL [\old(cond)=0, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L12] COND TRUE !(cond) VAL [\old(cond)=0, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=0] [L12] __VERIFIER_error() VAL [\old(cond)=0, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...