/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-benchs/inv_square-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:36:14,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:36:14,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:36:14,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 17:36:14,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:36:14,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:36:14,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:36:14,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:36:14,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:36:14,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:36:14,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:36:14,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:36:14,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:36:14,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:36:14,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:36:14,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:36:14,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:36:14,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:36:14,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:36:14,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:36:14,444 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:36:14,456 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:36:14,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:36:14,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:36:14,458 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:36:14,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:36:14,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:36:14,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:36:14,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:36:14,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:36:14,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:36:14,459 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:36:14,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:36:14,460 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:36:14,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:36:14,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:36:14,460 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:36:14,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:36:14,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:36:14,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:36:14,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:36:14,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:36:14,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:36:14,462 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:36:14,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:36:14,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:36:14,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:36:14,885 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:36:14,886 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:36:14,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/inv_square-2.c [2021-02-23 17:36:14,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aec476451/94e1332ecc5747ffa8d971a455d3aa27/FLAGabb2cc26e [2021-02-23 17:36:15,652 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:36:15,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_square-2.c [2021-02-23 17:36:15,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aec476451/94e1332ecc5747ffa8d971a455d3aa27/FLAGabb2cc26e [2021-02-23 17:36:16,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aec476451/94e1332ecc5747ffa8d971a455d3aa27 [2021-02-23 17:36:16,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:36:16,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:36:16,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:36:16,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:36:16,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:36:16,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:36:16" (1/1) ... [2021-02-23 17:36:16,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ecfdf06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:16, skipping insertion in model container [2021-02-23 17:36:16,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:36:16" (1/1) ... [2021-02-23 17:36:16,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:36:16,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:36:16,219 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_square-2.c[484,497] [2021-02-23 17:36:16,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:36:16,244 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:36:16,257 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_square-2.c[484,497] [2021-02-23 17:36:16,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:36:16,275 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:36:16,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:16 WrapperNode [2021-02-23 17:36:16,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:36:16,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:36:16,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:36:16,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:36:16,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:16" (1/1) ... [2021-02-23 17:36:16,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:16" (1/1) ... [2021-02-23 17:36:16,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:16" (1/1) ... [2021-02-23 17:36:16,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:16" (1/1) ... [2021-02-23 17:36:16,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:16" (1/1) ... [2021-02-23 17:36:16,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:16" (1/1) ... [2021-02-23 17:36:16,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:16" (1/1) ... [2021-02-23 17:36:16,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:36:16,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:36:16,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:36:16,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:36:16,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:16" (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 [2021-02-23 17:36:16,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:36:16,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:36:16,400 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:36:16,400 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 17:36:16,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 17:36:16,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:36:16,401 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:36:16,401 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:36:16,401 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:36:16,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:36:16,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-23 17:36:16,402 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 17:36:16,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 17:36:16,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:36:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:36:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:36:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:36:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:36:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:36:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:36:16,687 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:36:16,689 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 17:36:16,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:36:16 BoogieIcfgContainer [2021-02-23 17:36:16,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:36:16,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:36:16,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:36:16,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:36:16,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:36:16" (1/3) ... [2021-02-23 17:36:16,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b903ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:36:16, skipping insertion in model container [2021-02-23 17:36:16,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:16" (2/3) ... [2021-02-23 17:36:16,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b903ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:36:16, skipping insertion in model container [2021-02-23 17:36:16,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:36:16" (3/3) ... [2021-02-23 17:36:16,712 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-2.c [2021-02-23 17:36:16,729 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:36:16,740 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:36:16,783 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:36:16,846 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:36:16,846 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:36:16,846 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:36:16,846 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:36:16,846 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:36:16,847 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:36:16,847 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:36:16,847 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:36:16,865 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2021-02-23 17:36:16,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 17:36:16,875 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:36:16,876 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] [2021-02-23 17:36:16,876 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:36:16,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:36:16,883 INFO L82 PathProgramCache]: Analyzing trace with hash 181478775, now seen corresponding path program 1 times [2021-02-23 17:36:16,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:36:16,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175196582] [2021-02-23 17:36:16,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:36:16,993 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:36:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:36:17,070 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:36:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:36:17,101 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:36:17,147 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:36:17,149 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:36:17,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:36:17,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:36:17 BoogieIcfgContainer [2021-02-23 17:36:17,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:36:17,186 INFO L168 Benchmark]: Toolchain (without parser) took 1155.42 ms. Allocated memory is still 157.3 MB. Free memory was 133.2 MB in the beginning and 128.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:36:17,189 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 157.3 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:36:17,191 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.04 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 122.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:36:17,194 INFO L168 Benchmark]: Boogie Preprocessor took 30.70 ms. Allocated memory is still 157.3 MB. Free memory was 122.6 MB in the beginning and 121.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:36:17,195 INFO L168 Benchmark]: RCFGBuilder took 382.40 ms. Allocated memory is still 157.3 MB. Free memory was 121.2 MB in the beginning and 106.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-23 17:36:17,195 INFO L168 Benchmark]: TraceAbstraction took 486.00 ms. Allocated memory is still 157.3 MB. Free memory was 106.4 MB in the beginning and 128.1 MB in the end (delta: -21.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:36:17,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 157.3 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 235.04 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 122.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.70 ms. Allocated memory is still 157.3 MB. Free memory was 122.6 MB in the beginning and 121.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 382.40 ms. Allocated memory is still 157.3 MB. Free memory was 121.2 MB in the beginning and 106.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 486.00 ms. Allocated memory is still 157.3 MB. Free memory was 106.4 MB in the beginning and 128.1 MB in the end (delta: -21.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 24, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L17] float x, y, z; [L19] x = __VERIFIER_nondet_float() [L20] CALL assume_abort_if_not(x >= -1.f && x <= 1.f) [L11] COND FALSE !(!cond) [L20] RET assume_abort_if_not(x >= -1.f && x <= 1.f) [L22] COND TRUE x <= -1e-20f || x >= 1e-20f [L23] y = x * x [L24] CALL __VERIFIER_assert(y != 0.f) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, 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=39occurred 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: No data available, 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...