/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-benchs/float_int_inv_square.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 15:21:53,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 15:21:53,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 15:21:53,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 15:21:53,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 15:21:53,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 15:21:53,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 15:21:53,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 15:21:53,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 15:21:53,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 15:21:53,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 15:21:53,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 15:21:53,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 15:21:53,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 15:21:53,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 15:21:53,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 15:21:53,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 15:21:53,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 15:21:53,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 15:21:53,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 15:21:53,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 15:21:53,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 15:21:53,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 15:21:53,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 15:21:53,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 15:21:53,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 15:21:53,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 15:21:53,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 15:21:53,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 15:21:53,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 15:21:53,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 15:21:53,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 15:21:53,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 15:21:53,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 15:21:53,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 15:21:53,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 15:21:53,758 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 15:21:53,774 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 15:21:53,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 15:21:53,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 15:21:53,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 15:21:53,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 15:21:53,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 15:21:53,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 15:21:53,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 15:21:53,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 15:21:53,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 15:21:53,780 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 15:21:53,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 15:21:53,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 15:21:53,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 15:21:53,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 15:21:53,782 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 15:21:53,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 15:21:53,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 15:21:53,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 15:21:53,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 15:21:53,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 15:21:53,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 15:21:53,783 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation [2020-07-07 15:21:54,050 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 15:21:54,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 15:21:54,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 15:21:54,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 15:21:54,069 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 15:21:54,069 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/float_int_inv_square.c [2020-07-07 15:21:54,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be968930f/9ac10a30d1df4e3d824091344493f80e/FLAGeca850773 [2020-07-07 15:21:54,623 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 15:21:54,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/float_int_inv_square.c [2020-07-07 15:21:54,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be968930f/9ac10a30d1df4e3d824091344493f80e/FLAGeca850773 [2020-07-07 15:21:55,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be968930f/9ac10a30d1df4e3d824091344493f80e [2020-07-07 15:21:55,044 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 15:21:55,048 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 15:21:55,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 15:21:55,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 15:21:55,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 15:21:55,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:55,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ffe76b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55, skipping insertion in model container [2020-07-07 15:21:55,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:55,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 15:21:55,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 15:21:55,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 15:21:55,277 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 15:21:55,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 15:21:55,312 INFO L208 MainTranslator]: Completed translation [2020-07-07 15:21:55,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55 WrapperNode [2020-07-07 15:21:55,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 15:21:55,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 15:21:55,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 15:21:55,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 15:21:55,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:55,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:55,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:55,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:55,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:55,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:55,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (1/1) ... [2020-07-07 15:21:55,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 15:21:55,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 15:21:55,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 15:21:55,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 15:21:55,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (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 [2020-07-07 15:21:55,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 15:21:55,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 15:21:55,553 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 15:21:55,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 15:21:55,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 15:21:55,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 15:21:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 15:21:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 15:21:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 15:21:55,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 15:21:55,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 15:21:55,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 15:21:55,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 15:21:55,763 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 15:21:55,764 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 15:21:55,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 03:21:55 BoogieIcfgContainer [2020-07-07 15:21:55,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 15:21:55,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 15:21:55,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 15:21:55,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 15:21:55,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 03:21:55" (1/3) ... [2020-07-07 15:21:55,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d32099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 03:21:55, skipping insertion in model container [2020-07-07 15:21:55,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:21:55" (2/3) ... [2020-07-07 15:21:55,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d32099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 03:21:55, skipping insertion in model container [2020-07-07 15:21:55,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 03:21:55" (3/3) ... [2020-07-07 15:21:55,780 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2020-07-07 15:21:55,795 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 15:21:55,803 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 15:21:55,820 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 15:21:55,844 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 15:21:55,844 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 15:21:55,844 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-07 15:21:55,845 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 15:21:55,845 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 15:21:55,845 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 15:21:55,845 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 15:21:55,845 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 15:21:55,879 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-07-07 15:21:55,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 15:21:55,889 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 15:21:55,890 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] [2020-07-07 15:21:55,890 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 15:21:55,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 15:21:55,897 INFO L82 PathProgramCache]: Analyzing trace with hash -865761349, now seen corresponding path program 1 times [2020-07-07 15:21:55,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 15:21:55,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914421138] [2020-07-07 15:21:55,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 15:21:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 15:21:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 15:21:55,972 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 15:21:55,973 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 15:21:55,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 03:21:55 BoogieIcfgContainer [2020-07-07 15:21:55,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 15:21:56,002 INFO L168 Benchmark]: Toolchain (without parser) took 954.62 ms. Allocated memory was 145.8 MB in the beginning and 205.5 MB in the end (delta: 59.8 MB). Free memory was 102.6 MB in the beginning and 159.7 MB in the end (delta: -57.1 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-07 15:21:56,003 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 145.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 15:21:56,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.69 ms. Allocated memory is still 145.8 MB. Free memory was 102.2 MB in the beginning and 92.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-07 15:21:56,005 INFO L168 Benchmark]: Boogie Preprocessor took 159.96 ms. Allocated memory was 145.8 MB in the beginning and 205.5 MB in the end (delta: 59.8 MB). Free memory was 92.9 MB in the beginning and 183.8 MB in the end (delta: -90.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-07 15:21:56,006 INFO L168 Benchmark]: RCFGBuilder took 297.25 ms. Allocated memory is still 205.5 MB. Free memory was 183.8 MB in the beginning and 171.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-07-07 15:21:56,007 INFO L168 Benchmark]: TraceAbstraction took 226.63 ms. Allocated memory is still 205.5 MB. Free memory was 171.2 MB in the beginning and 159.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-07-07 15:21:56,011 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 145.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 263.69 ms. Allocated memory is still 145.8 MB. Free memory was 102.2 MB in the beginning and 92.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 159.96 ms. Allocated memory was 145.8 MB in the beginning and 205.5 MB in the end (delta: 59.8 MB). Free memory was 92.9 MB in the beginning and 183.8 MB in the end (delta: -90.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 297.25 ms. Allocated memory is still 205.5 MB. Free memory was 183.8 MB in the beginning and 171.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226.63 ms. Allocated memory is still 205.5 MB. Free memory was 171.2 MB in the beginning and 159.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 20, overapproximation of someBinaryArithmeticFLOAToperation at line 19. Possible FailurePath: [L13] int x; [L14] float y, z; [L16] x = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, x=0] [L17] CALL assume_abort_if_not(x >= -10 && x <= 10) VAL [\old(cond)=1] [L7] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L17] RET assume_abort_if_not(x >= -10 && x <= 10) VAL [x=0] [L19] y = x*x - 4.f VAL [x=0] [L20] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L9] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L9] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, 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=30occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 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...