/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/float_int_inv_square.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:54:17,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:54:17,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:54:17,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 03:54:17,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:54:17,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:54:17,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:54:17,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:54:17,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:54:17,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:54:17,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:54:17,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:54:17,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:54:17,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:54:17,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:54:17,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:54:17,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 03:54:17,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:54:17,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:54:17,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:54:17,292 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:54:17,315 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:54:17,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:54:17,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:54:17,321 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:54:17,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:54:17,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:54:17,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:54:17,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:54:17,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:54:17,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:54:17,324 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:54:17,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:54:17,324 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:54:17,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:54:17,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:54:17,326 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:54:17,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:54:17,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:54:17,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:54:17,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:54:17,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:54:17,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:54:17,328 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:54:17,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:54:17,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:54:17,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:54:17,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:54:17,788 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:54:17,789 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:54:17,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/float_int_inv_square.c [2021-02-24 03:54:17,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c31a886a/42ed088924f640a9990b868bccfb3c2a/FLAGe0ca4bdfc [2021-02-24 03:54:18,497 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:54:18,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/float_int_inv_square.c [2021-02-24 03:54:18,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c31a886a/42ed088924f640a9990b868bccfb3c2a/FLAGe0ca4bdfc [2021-02-24 03:54:18,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c31a886a/42ed088924f640a9990b868bccfb3c2a [2021-02-24 03:54:18,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:54:18,896 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:54:18,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:54:18,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:54:18,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:54:18,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:54:18" (1/1) ... [2021-02-24 03:54:18,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2495ee9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:54:18, skipping insertion in model container [2021-02-24 03:54:18,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:54:18" (1/1) ... [2021-02-24 03:54:18,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:54:18,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:54:19,147 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/float_int_inv_square.c[488,501] [2021-02-24 03:54:19,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:54:19,188 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:54:19,202 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/float_int_inv_square.c[488,501] [2021-02-24 03:54:19,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:54:19,222 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:54:19,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:54:19 WrapperNode [2021-02-24 03:54:19,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:54:19,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:54:19,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:54:19,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:54:19,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:54:19" (1/1) ... [2021-02-24 03:54:19,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:54:19" (1/1) ... [2021-02-24 03:54:19,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:54:19" (1/1) ... [2021-02-24 03:54:19,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:54:19" (1/1) ... [2021-02-24 03:54:19,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:54:19" (1/1) ... [2021-02-24 03:54:19,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:54:19" (1/1) ... [2021-02-24 03:54:19,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:54:19" (1/1) ... [2021-02-24 03:54:19,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:54:19,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:54:19,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:54:19,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:54:19,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:54:19" (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 [2021-02-24 03:54:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:54:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:54:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:54:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 03:54:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 03:54:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:54:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:54:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:54:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:54:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:54:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:54:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 03:54:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 03:54:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:54:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:54:19,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:54:19,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:54:19,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:54:19,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:54:19,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:54:19,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:54:19,727 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 03:54:19,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:54:19 BoogieIcfgContainer [2021-02-24 03:54:19,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:54:19,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:54:19,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:54:19,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:54:19,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:54:18" (1/3) ... [2021-02-24 03:54:19,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c5ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:54:19, skipping insertion in model container [2021-02-24 03:54:19,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:54:19" (2/3) ... [2021-02-24 03:54:19,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c5ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:54:19, skipping insertion in model container [2021-02-24 03:54:19,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:54:19" (3/3) ... [2021-02-24 03:54:19,756 INFO L111 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2021-02-24 03:54:19,764 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:54:19,770 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:54:19,793 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:54:19,817 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:54:19,818 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:54:19,818 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:54:19,818 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:54:19,818 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:54:19,819 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:54:19,819 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:54:19,819 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:54:19,836 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2021-02-24 03:54:19,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-24 03:54:19,846 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:54:19,847 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] [2021-02-24 03:54:19,848 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:54:19,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:54:19,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1825198872, now seen corresponding path program 1 times [2021-02-24 03:54:19,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:54:19,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42164174] [2021-02-24 03:54:19,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:54:19,968 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:54:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:54:20,119 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:54:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:54:20,189 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:54:20,243 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:54:20,244 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:54:20,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:54:20,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:54:20 BoogieIcfgContainer [2021-02-24 03:54:20,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:54:20,272 INFO L168 Benchmark]: Toolchain (without parser) took 1387.14 ms. Allocated memory is still 155.2 MB. Free memory was 132.2 MB in the beginning and 123.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:54:20,276 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:54:20,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.16 ms. Allocated memory is still 155.2 MB. Free memory was 131.1 MB in the beginning and 121.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 03:54:20,280 INFO L168 Benchmark]: Boogie Preprocessor took 35.50 ms. Allocated memory is still 155.2 MB. Free memory was 121.7 MB in the beginning and 120.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:54:20,282 INFO L168 Benchmark]: RCFGBuilder took 472.08 ms. Allocated memory is still 155.2 MB. Free memory was 120.1 MB in the beginning and 137.9 MB in the end (delta: -17.8 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2021-02-24 03:54:20,285 INFO L168 Benchmark]: TraceAbstraction took 531.21 ms. Allocated memory is still 155.2 MB. Free memory was 137.4 MB in the beginning and 123.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-24 03:54:20,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 320.16 ms. Allocated memory is still 155.2 MB. Free memory was 131.1 MB in the beginning and 121.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.50 ms. Allocated memory is still 155.2 MB. Free memory was 121.7 MB in the beginning and 120.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 472.08 ms. Allocated memory is still 155.2 MB. Free memory was 120.1 MB in the beginning and 137.9 MB in the end (delta: -17.8 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 531.21 ms. Allocated memory is still 155.2 MB. Free memory was 137.4 MB in the beginning and 123.2 MB in the end (delta: 14.2 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: 11]: 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 22, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L15] int x; [L16] float y, z; [L18] x = __VERIFIER_nondet_int() [L19] CALL assume_abort_if_not(x >= -10 && x <= 10) [L9] COND FALSE !(!cond) [L19] RET assume_abort_if_not(x >= -10 && x <= 10) [L21] y = x*x - 4.f [L22] CALL __VERIFIER_assert(y != 0.f) [L11] COND TRUE !(cond) [L11] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, 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...