/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-benchs/float_int_inv_square.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 00:30:38,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 00:30:38,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 00:30:38,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 00:30:38,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 00:30:38,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 00:30:38,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 00:30:38,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 00:30:38,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 00:30:38,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 00:30:38,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 00:30:38,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 00:30:38,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 00:30:38,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 00:30:38,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 00:30:38,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 00:30:38,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 00:30:38,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 00:30:38,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 00:30:38,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 00:30:38,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 00:30:38,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 00:30:38,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 00:30:38,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 00:30:38,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 00:30:38,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 00:30:38,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 00:30:38,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 00:30:38,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 00:30:38,883 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 00:30:38,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 00:30:38,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 00:30:38,885 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 00:30:38,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 00:30:38,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 00:30:38,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 00:30:38,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 00:30:38,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 00:30:38,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 00:30:38,886 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 00:30:38,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 00:30:38,886 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 00:30:38,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 00:30:38,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 00:30:38,887 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 00:30:38,887 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 00:30:38,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 00:30:38,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:30:38,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 00:30:38,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 00:30:38,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 00:30:38,888 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 00:30:39,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 00:30:39,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 00:30:39,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 00:30:39,271 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 00:30:39,271 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 00:30:39,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/float_int_inv_square.c [2020-10-24 00:30:39,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d552a3447/7a15d528235243b8926032e227f4eeac/FLAG49ff3db4f [2020-10-24 00:30:40,017 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 00:30:40,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/float_int_inv_square.c [2020-10-24 00:30:40,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d552a3447/7a15d528235243b8926032e227f4eeac/FLAG49ff3db4f [2020-10-24 00:30:40,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d552a3447/7a15d528235243b8926032e227f4eeac [2020-10-24 00:30:40,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 00:30:40,391 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 00:30:40,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 00:30:40,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 00:30:40,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 00:30:40,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:30:40" (1/1) ... [2020-10-24 00:30:40,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@224ee5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:40, skipping insertion in model container [2020-10-24 00:30:40,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:30:40" (1/1) ... [2020-10-24 00:30:40,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 00:30:40,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 00:30:40,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:30:40,590 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 00:30:40,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:30:40,624 INFO L208 MainTranslator]: Completed translation [2020-10-24 00:30:40,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:40 WrapperNode [2020-10-24 00:30:40,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 00:30:40,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 00:30:40,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 00:30:40,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 00:30:40,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:40" (1/1) ... [2020-10-24 00:30:40,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:40" (1/1) ... [2020-10-24 00:30:40,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:40" (1/1) ... [2020-10-24 00:30:40,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:40" (1/1) ... [2020-10-24 00:30:40,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:40" (1/1) ... [2020-10-24 00:30:40,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:40" (1/1) ... [2020-10-24 00:30:40,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:40" (1/1) ... [2020-10-24 00:30:40,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 00:30:40,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 00:30:40,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 00:30:40,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 00:30:40,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:40" (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 [2020-10-24 00:30:40,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 00:30:40,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 00:30:40,746 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 00:30:40,746 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 00:30:40,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 00:30:40,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 00:30:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 00:30:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 00:30:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 00:30:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 00:30:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 00:30:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 00:30:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 00:30:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 00:30:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 00:30:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 00:30:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 00:30:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 00:30:40,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 00:30:40,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 00:30:41,063 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 00:30:41,064 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-24 00:30:41,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:30:41 BoogieIcfgContainer [2020-10-24 00:30:41,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 00:30:41,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 00:30:41,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 00:30:41,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 00:30:41,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:30:40" (1/3) ... [2020-10-24 00:30:41,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e5a92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:30:41, skipping insertion in model container [2020-10-24 00:30:41,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:40" (2/3) ... [2020-10-24 00:30:41,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e5a92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:30:41, skipping insertion in model container [2020-10-24 00:30:41,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:30:41" (3/3) ... [2020-10-24 00:30:41,076 INFO L111 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2020-10-24 00:30:41,094 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 00:30:41,102 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 00:30:41,133 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 00:30:41,187 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 00:30:41,187 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 00:30:41,187 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 00:30:41,188 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 00:30:41,188 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 00:30:41,188 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 00:30:41,188 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 00:30:41,188 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 00:30:41,209 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-24 00:30:41,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-24 00:30:41,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:30:41,225 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] [2020-10-24 00:30:41,225 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:30:41,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:30:41,239 INFO L82 PathProgramCache]: Analyzing trace with hash -202542602, now seen corresponding path program 1 times [2020-10-24 00:30:41,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:30:41,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019468763] [2020-10-24 00:30:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:30:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:30:41,470 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:30:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:30:41,540 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:30:41,585 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 00:30:41,585 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 00:30:41,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 00:30:41,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:30:41 BoogieIcfgContainer [2020-10-24 00:30:41,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 00:30:41,655 INFO L168 Benchmark]: Toolchain (without parser) took 1268.48 ms. Allocated memory is still 161.5 MB. Free memory was 137.4 MB in the beginning and 97.6 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 8.0 GB. [2020-10-24 00:30:41,656 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 161.5 MB. Free memory is still 136.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 00:30:41,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.73 ms. Allocated memory is still 161.5 MB. Free memory was 137.0 MB in the beginning and 127.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 00:30:41,658 INFO L168 Benchmark]: Boogie Preprocessor took 34.73 ms. Allocated memory is still 161.5 MB. Free memory was 127.6 MB in the beginning and 126.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 00:30:41,659 INFO L168 Benchmark]: RCFGBuilder took 404.52 ms. Allocated memory is still 161.5 MB. Free memory was 126.3 MB in the beginning and 111.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-24 00:30:41,660 INFO L168 Benchmark]: TraceAbstraction took 584.35 ms. Allocated memory is still 161.5 MB. Free memory was 111.2 MB in the beginning and 97.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-24 00:30:41,664 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 161.5 MB. Free memory is still 136.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 232.73 ms. Allocated memory is still 161.5 MB. Free memory was 137.0 MB in the beginning and 127.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.73 ms. Allocated memory is still 161.5 MB. Free memory was 127.6 MB in the beginning and 126.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 404.52 ms. Allocated memory is still 161.5 MB. Free memory was 126.3 MB in the beginning and 111.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 584.35 ms. Allocated memory is still 161.5 MB. Free memory was 111.2 MB in the beginning and 97.6 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: 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 22, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L15] int x; [L16] float y, z; [L18] x = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=10, x=10] [L19] CALL assume_abort_if_not(x >= -10 && x <= 10) VAL [\old(cond)=1] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L19] RET assume_abort_if_not(x >= -10 && x <= 10) VAL [x=10] [L21] y = x*x - 4.f VAL [x=10] [L22] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L11] CALL reach_error() [L3] __assert_fail("0", "float_int_inv_square.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: 0.4s, 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=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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...