/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/inv_square_int.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 15:21:54,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 15:21:54,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 15:21:54,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 15:21:54,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 15:21:54,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 15:21:54,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 15:21:54,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 15:21:54,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 15:21:54,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 15:21:54,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 15:21:54,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 15:21:54,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 15:21:54,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 15:21:54,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 15:21:54,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 15:21:54,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 15:21:54,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 15:21:54,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 15:21:54,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 15:21:54,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 15:21:54,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 15:21:54,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 15:21:54,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 15:21:54,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 15:21:54,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 15:21:54,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 15:21:54,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 15:21:54,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 15:21:54,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 15:21:54,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 15:21:54,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 15:21:54,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 15:21:54,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 15:21:54,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 15:21:54,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 15:21:54,444 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 15:21:54,474 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 15:21:54,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 15:21:54,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 15:21:54,476 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 15:21:54,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 15:21:54,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 15:21:54,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 15:21:54,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 15:21:54,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 15:21:54,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 15:21:54,479 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 15:21:54,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 15:21:54,479 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 15:21:54,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 15:21:54,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 15:21:54,480 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 15:21:54,480 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 15:21:54,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 15:21:54,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 15:21:54,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 15:21:54,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 15:21:54,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 15:21:54,481 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 15:21:54,770 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 15:21:54,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 15:21:54,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 15:21:54,788 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 15:21:54,789 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 15:21:54,789 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/inv_square_int.c [2020-07-07 15:21:54,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d9873bcd/a65bec861c1b4bdea282fef9e45b089f/FLAG0ee94c4c6 [2020-07-07 15:21:55,298 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 15:21:55,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_square_int.c [2020-07-07 15:21:55,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d9873bcd/a65bec861c1b4bdea282fef9e45b089f/FLAG0ee94c4c6 [2020-07-07 15:21:55,705 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d9873bcd/a65bec861c1b4bdea282fef9e45b089f [2020-07-07 15:21:55,716 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 15:21:55,717 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 15:21:55,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 15:21:55,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 15:21:55,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 15:21:55,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:55,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8b2f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55, skipping insertion in model container [2020-07-07 15:21:55,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:55,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 15:21:55,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 15:21:55,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 15:21:55,937 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 15:21:55,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 15:21:55,966 INFO L208 MainTranslator]: Completed translation [2020-07-07 15:21:55,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55 WrapperNode [2020-07-07 15:21:55,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 15:21:55,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 15:21:55,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 15:21:55,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 15:21:55,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:55,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:56,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:56,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:56,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:56,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:56,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:56,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 15:21:56,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 15:21:56,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 15:21:56,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 15:21:56,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (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 15:21:56,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 15:21:56,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 15:21:56,161 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 15:21:56,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 15:21:56,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 15:21:56,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 15:21:56,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 15:21:56,162 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 15:21:56,162 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 15:21:56,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 15:21:56,162 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 15:21:56,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 15:21:56,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 15:21:56,354 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 15:21:56,354 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 15:21:56,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 03:21:56 BoogieIcfgContainer [2020-07-07 15:21:56,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 15:21:56,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 15:21:56,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 15:21:56,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 15:21:56,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 03:21:55" (1/3) ... [2020-07-07 15:21:56,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ac0e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 03:21:56, skipping insertion in model container [2020-07-07 15:21:56,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (2/3) ... [2020-07-07 15:21:56,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ac0e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 03:21:56, skipping insertion in model container [2020-07-07 15:21:56,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 03:21:56" (3/3) ... [2020-07-07 15:21:56,368 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square_int.c [2020-07-07 15:21:56,380 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 15:21:56,387 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 15:21:56,410 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 15:21:56,437 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 15:21:56,437 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 15:21:56,437 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-07 15:21:56,437 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 15:21:56,438 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 15:21:56,438 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 15:21:56,438 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 15:21:56,438 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 15:21:56,457 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-07-07 15:21:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 15:21:56,469 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 15:21:56,470 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] [2020-07-07 15:21:56,470 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 15:21:56,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 15:21:56,477 INFO L82 PathProgramCache]: Analyzing trace with hash -865761349, now seen corresponding path program 1 times [2020-07-07 15:21:56,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 15:21:56,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570954021] [2020-07-07 15:21:56,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 15:21:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 15:21:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 15:21:56,564 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 15:21:56,568 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 15:21:56,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 03:21:56 BoogieIcfgContainer [2020-07-07 15:21:56,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 15:21:56,601 INFO L168 Benchmark]: Toolchain (without parser) took 882.36 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 104.2 MB in the beginning and 158.3 MB in the end (delta: -54.0 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-07-07 15:21:56,602 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 15:21:56,603 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.98 ms. Allocated memory is still 145.8 MB. Free memory was 103.8 MB in the beginning and 94.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-07 15:21:56,604 INFO L168 Benchmark]: Boogie Preprocessor took 124.08 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 94.5 MB in the beginning and 182.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-07 15:21:56,605 INFO L168 Benchmark]: RCFGBuilder took 267.08 ms. Allocated memory is still 203.4 MB. Free memory was 182.0 MB in the beginning and 169.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-07-07 15:21:56,606 INFO L168 Benchmark]: TraceAbstraction took 237.24 ms. Allocated memory is still 203.4 MB. Free memory was 168.9 MB in the beginning and 158.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-07 15:21:56,610 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 248.98 ms. Allocated memory is still 145.8 MB. Free memory was 103.8 MB in the beginning and 94.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.08 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 94.5 MB in the beginning and 182.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 267.08 ms. Allocated memory is still 203.4 MB. Free memory was 182.0 MB in the beginning and 169.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237.24 ms. Allocated memory is still 203.4 MB. Free memory was 168.9 MB in the beginning and 158.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 11]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 22, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L15] int x; [L16] float y, z; [L18] x = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, x=0] [L19] CALL assume_abort_if_not(x >= -10 && x <= 10) VAL [\old(cond)=1] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L19] RET assume_abort_if_not(x >= -10 && x <= 10) VAL [x=0] [L21] y = x*x - 2.f VAL [x=0] [L22] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L11] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, 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=30occurred 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, 20 NumberOfCodeBlocks, 20 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...