/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_int.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:23:27,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:23:27,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:23:27,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:23:27,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:23:27,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:23:27,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:23:27,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:23:27,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:23:27,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:23:27,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:23:27,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:23:27,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:23:27,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:23:27,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:23:27,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:23:27,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:23:27,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:23:27,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:23:27,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:23:27,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:23:27,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:23:27,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:23:27,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:23:27,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 00:23:27,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:23:27,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:23:27,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:23:27,259 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:23:27,271 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:23:27,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:23:27,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:23:27,273 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:23:27,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:23:27,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:23:27,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:23:27,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:23:27,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:23:27,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:23:27,274 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:23:27,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:23:27,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:23:27,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:23:27,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:23:27,275 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:23:27,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:23:27,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:23:27,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:23:27,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:23:27,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:23:27,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:23:27,277 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:23:27,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:23:27,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:23:27,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:23:27,728 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:23:27,728 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:23:27,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/inv_square_int.c [2020-11-07 00:23:27,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30f5b3eef/ee88138922414378b43191d44bd853f2/FLAG9f3d1daca [2020-11-07 00:23:28,395 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:23:28,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_square_int.c [2020-11-07 00:23:28,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30f5b3eef/ee88138922414378b43191d44bd853f2/FLAG9f3d1daca [2020-11-07 00:23:28,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30f5b3eef/ee88138922414378b43191d44bd853f2 [2020-11-07 00:23:28,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:23:28,772 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:23:28,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:23:28,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:23:28,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:23:28,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:23:28" (1/1) ... [2020-11-07 00:23:28,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eeb43b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:28, skipping insertion in model container [2020-11-07 00:23:28,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:23:28" (1/1) ... [2020-11-07 00:23:28,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:23:28,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:23:28,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:23:28,986 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:23:28,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:23:29,014 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:23:29,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:29 WrapperNode [2020-11-07 00:23:29,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:23:29,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:23:29,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:23:29,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:23:29,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:29" (1/1) ... [2020-11-07 00:23:29,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:29" (1/1) ... [2020-11-07 00:23:29,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:29" (1/1) ... [2020-11-07 00:23:29,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:29" (1/1) ... [2020-11-07 00:23:29,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:29" (1/1) ... [2020-11-07 00:23:29,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:29" (1/1) ... [2020-11-07 00:23:29,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:29" (1/1) ... [2020-11-07 00:23:29,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:23:29,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:23:29,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:23:29,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:23:29,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:29" (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 [2020-11-07 00:23:29,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:23:29,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:23:29,137 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:23:29,138 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 00:23:29,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 00:23:29,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:23:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:23:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:23:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:23:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:23:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:23:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 00:23:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 00:23:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:23:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:23:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:23:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:23:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:23:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:23:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:23:29,619 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:23:29,620 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 00:23:29,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:23:29 BoogieIcfgContainer [2020-11-07 00:23:29,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:23:29,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:23:29,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:23:29,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:23:29,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:23:28" (1/3) ... [2020-11-07 00:23:29,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e27b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:23:29, skipping insertion in model container [2020-11-07 00:23:29,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:29" (2/3) ... [2020-11-07 00:23:29,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e27b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:23:29, skipping insertion in model container [2020-11-07 00:23:29,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:23:29" (3/3) ... [2020-11-07 00:23:29,641 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square_int.c [2020-11-07 00:23:29,654 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:23:29,657 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:23:29,667 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:23:29,687 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:23:29,688 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:23:29,688 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:23:29,688 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:23:29,688 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:23:29,688 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:23:29,688 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:23:29,688 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:23:29,701 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-11-07 00:23:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-07 00:23:29,709 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:23:29,710 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] [2020-11-07 00:23:29,711 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:23:29,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:23:29,716 INFO L82 PathProgramCache]: Analyzing trace with hash -202542602, now seen corresponding path program 1 times [2020-11-07 00:23:29,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:23:29,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502674731] [2020-11-07 00:23:29,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:23:29,795 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:23:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:23:29,877 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:23:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:23:29,913 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:23:29,947 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:23:29,947 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:23:29,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:23:29,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:23:29 BoogieIcfgContainer [2020-11-07 00:23:29,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:23:29,968 INFO L168 Benchmark]: Toolchain (without parser) took 1199.20 ms. Allocated memory is still 153.1 MB. Free memory was 129.5 MB in the beginning and 123.1 MB in the end (delta: 6.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. [2020-11-07 00:23:29,969 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 153.1 MB. Free memory is still 127.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:23:29,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.52 ms. Allocated memory is still 153.1 MB. Free memory was 128.7 MB in the beginning and 119.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 00:23:29,971 INFO L168 Benchmark]: Boogie Preprocessor took 35.42 ms. Allocated memory is still 153.1 MB. Free memory was 119.5 MB in the beginning and 118.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:23:29,972 INFO L168 Benchmark]: RCFGBuilder took 569.54 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 104.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:23:29,973 INFO L168 Benchmark]: TraceAbstraction took 341.78 ms. Allocated memory is still 153.1 MB. Free memory was 104.2 MB in the beginning and 123.1 MB in the end (delta: -18.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:23:29,976 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 153.1 MB. Free memory is still 127.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 241.52 ms. Allocated memory is still 153.1 MB. Free memory was 128.7 MB in the beginning and 119.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.42 ms. Allocated memory is still 153.1 MB. Free memory was 119.5 MB in the beginning and 118.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 569.54 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 104.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 341.78 ms. Allocated memory is still 153.1 MB. Free memory was 104.2 MB in the beginning and 123.1 MB in the end (delta: -18.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 24, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L17] int x; [L18] float y, z; [L20] x = __VERIFIER_nondet_int() [L21] CALL assume_abort_if_not(x >= -10 && x <= 10) [L11] COND FALSE !(!cond) [L21] RET assume_abort_if_not(x >= -10 && x <= 10) [L23] y = x*x - 2.f [L24] CALL __VERIFIER_assert(y != 0.f) [L13] COND TRUE !(cond) [L13] CALL reach_error() [L3] __assert_fail("0", "inv_square_int.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 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=42occurred 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...