/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/float-benchs/inv_square-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:30:21,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:30:21,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:30:21,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:30:21,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:30:21,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:30:21,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:30:21,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:30:21,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:30:21,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:30:21,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:30:21,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:30:21,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:30:21,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:30:21,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:30:21,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:30:21,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:30:21,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:30:21,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:30:21,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:30:21,320 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:30:21,335 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:30:21,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:30:21,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:30:21,341 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:30:21,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:30:21,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:30:21,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:30:21,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:30:21,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:30:21,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:30:21,343 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:30:21,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:30:21,344 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:30:21,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:30:21,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:30:21,344 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:30:21,344 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:30:21,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:30:21,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:30:21,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:30:21,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:30:21,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:30:21,347 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:30:21,347 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:30:21,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:30:21,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:30:21,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:30:21,782 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:30:21,783 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:30:21,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/inv_square-1.c [2021-02-22 01:30:21,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70412a18a/57a5e7d6d40a473ebfa1454644edf01f/FLAG7fdd1aa6f [2021-02-22 01:30:22,445 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:30:22,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_square-1.c [2021-02-22 01:30:22,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70412a18a/57a5e7d6d40a473ebfa1454644edf01f/FLAG7fdd1aa6f [2021-02-22 01:30:22,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70412a18a/57a5e7d6d40a473ebfa1454644edf01f [2021-02-22 01:30:22,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:30:22,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:30:22,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:30:22,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:30:22,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:30:22,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:30:22" (1/1) ... [2021-02-22 01:30:22,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a48ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:22, skipping insertion in model container [2021-02-22 01:30:22,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:30:22" (1/1) ... [2021-02-22 01:30:22,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:30:22,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:30:23,010 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-1.c[487,500] [2021-02-22 01:30:23,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:30:23,033 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:30:23,047 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-1.c[487,500] [2021-02-22 01:30:23,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:30:23,067 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:30:23,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:23 WrapperNode [2021-02-22 01:30:23,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:30:23,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:30:23,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:30:23,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:30:23,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:23" (1/1) ... [2021-02-22 01:30:23,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:23" (1/1) ... [2021-02-22 01:30:23,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:23" (1/1) ... [2021-02-22 01:30:23,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:23" (1/1) ... [2021-02-22 01:30:23,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:23" (1/1) ... [2021-02-22 01:30:23,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:23" (1/1) ... [2021-02-22 01:30:23,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:23" (1/1) ... [2021-02-22 01:30:23,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:30:23,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:30:23,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:30:23,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:30:23,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:23" (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 [2021-02-22 01:30:23,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:30:23,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:30:23,217 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:30:23,217 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 01:30:23,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 01:30:23,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:30:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:30:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:30:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:30:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:30:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-22 01:30:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 01:30:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 01:30:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:30:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:30:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:30:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:30:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:30:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:30:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:30:23,665 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:30:23,669 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:30:23,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:30:23 BoogieIcfgContainer [2021-02-22 01:30:23,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:30:23,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:30:23,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:30:23,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:30:23,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:30:22" (1/3) ... [2021-02-22 01:30:23,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226635d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:30:23, skipping insertion in model container [2021-02-22 01:30:23,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:23" (2/3) ... [2021-02-22 01:30:23,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226635d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:30:23, skipping insertion in model container [2021-02-22 01:30:23,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:30:23" (3/3) ... [2021-02-22 01:30:23,694 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2021-02-22 01:30:23,712 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:30:23,719 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:30:23,740 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:30:23,777 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:30:23,777 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:30:23,777 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:30:23,778 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:30:23,778 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:30:23,778 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:30:23,779 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:30:23,779 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:30:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2021-02-22 01:30:23,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-22 01:30:23,820 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:30:23,821 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] [2021-02-22 01:30:23,822 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:30:23,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:30:23,831 INFO L82 PathProgramCache]: Analyzing trace with hash 181478775, now seen corresponding path program 1 times [2021-02-22 01:30:23,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:30:23,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755097143] [2021-02-22 01:30:23,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:30:23,940 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:30:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:30:24,080 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:30:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:30:24,136 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:30:24,167 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:30:24,168 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:30:24,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:30:24,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:30:24 BoogieIcfgContainer [2021-02-22 01:30:24,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:30:24,188 INFO L168 Benchmark]: Toolchain (without parser) took 1369.85 ms. Allocated memory is still 157.3 MB. Free memory was 133.3 MB in the beginning and 123.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:30:24,188 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:30:24,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.08 ms. Allocated memory is still 157.3 MB. Free memory was 132.3 MB in the beginning and 122.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:30:24,190 INFO L168 Benchmark]: Boogie Preprocessor took 37.56 ms. Allocated memory is still 157.3 MB. Free memory was 122.8 MB in the beginning and 120.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:30:24,192 INFO L168 Benchmark]: RCFGBuilder took 563.81 ms. Allocated memory is still 157.3 MB. Free memory was 120.8 MB in the beginning and 138.1 MB in the end (delta: -17.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:30:24,193 INFO L168 Benchmark]: TraceAbstraction took 508.44 ms. Allocated memory is still 157.3 MB. Free memory was 137.6 MB in the beginning and 123.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-22 01:30:24,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 238.08 ms. Allocated memory is still 157.3 MB. Free memory was 132.3 MB in the beginning and 122.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.56 ms. Allocated memory is still 157.3 MB. Free memory was 122.8 MB in the beginning and 120.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 563.81 ms. Allocated memory is still 157.3 MB. Free memory was 120.8 MB in the beginning and 138.1 MB in the end (delta: -17.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 508.44 ms. Allocated memory is still 157.3 MB. Free memory was 137.6 MB in the beginning and 123.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. 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 != 0.f [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...