/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/floats-cbmc-regression/float2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:32:08,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:32:08,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:32:08,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 22:32:08,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 22:32:08,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 22:32:08,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 22:32:08,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 22:32:08,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 22:32:08,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 22:32:08,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 22:32:08,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 22:32:08,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:32:08,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:32:08,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:32:08,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:32:08,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:32:08,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:32:08,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:32:08,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:32:08,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:32:08,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:32:08,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:32:08,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:32:08,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:32:08,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 22:32:08,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 22:32:08,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 22:32:08,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 22:32:08,284 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:32:08,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:32:08,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:32:08,287 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:32:08,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:32:08,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:32:08,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:32:08,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:32:08,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:32:08,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:32:08,288 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:32:08,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:32:08,289 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:32:08,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:32:08,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:32:08,290 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:32:08,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:32:08,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:32:08,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:32:08,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:32:08,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:32:08,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:32:08,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:32:08,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:32:08,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:32:08,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:32:08,776 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:32:08,779 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:32:08,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float2.c [2021-02-23 22:32:08,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d22b7ae57/3f0d41c22ff54743b33a9aa2aa7914ad/FLAG37b0e06ab [2021-02-23 22:32:09,447 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:32:09,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c [2021-02-23 22:32:09,455 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d22b7ae57/3f0d41c22ff54743b33a9aa2aa7914ad/FLAG37b0e06ab [2021-02-23 22:32:09,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d22b7ae57/3f0d41c22ff54743b33a9aa2aa7914ad [2021-02-23 22:32:09,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:32:09,847 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:32:09,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:32:09,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:32:09,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:32:09,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:32:09" (1/1) ... [2021-02-23 22:32:09,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f2bba9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:32:09, skipping insertion in model container [2021-02-23 22:32:09,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:32:09" (1/1) ... [2021-02-23 22:32:09,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:32:09,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:32:10,023 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[366,379] [2021-02-23 22:32:10,027 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[420,433] [2021-02-23 22:32:10,028 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[493,506] [2021-02-23 22:32:10,030 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[557,570] [2021-02-23 22:32:10,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:32:10,041 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:32:10,056 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[366,379] [2021-02-23 22:32:10,057 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[420,433] [2021-02-23 22:32:10,058 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[493,506] [2021-02-23 22:32:10,059 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[557,570] [2021-02-23 22:32:10,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:32:10,075 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:32:10,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:32:10 WrapperNode [2021-02-23 22:32:10,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:32:10,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:32:10,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:32:10,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:32:10,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:32:10" (1/1) ... [2021-02-23 22:32:10,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:32:10" (1/1) ... [2021-02-23 22:32:10,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:32:10" (1/1) ... [2021-02-23 22:32:10,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:32:10" (1/1) ... [2021-02-23 22:32:10,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:32:10" (1/1) ... [2021-02-23 22:32:10,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:32:10" (1/1) ... [2021-02-23 22:32:10,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:32:10" (1/1) ... [2021-02-23 22:32:10,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:32:10,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:32:10,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:32:10,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:32:10,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:32:10" (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 [2021-02-23 22:32:10,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:32:10,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:32:10,231 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:32:10,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:32:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:32:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:32:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:32:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:32:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:32:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:32:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:32:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:32:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:32:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:32:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:32:10,658 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:32:10,659 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 22:32:10,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:32:10 BoogieIcfgContainer [2021-02-23 22:32:10,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:32:10,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:32:10,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:32:10,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:32:10,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:32:09" (1/3) ... [2021-02-23 22:32:10,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b98c67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:32:10, skipping insertion in model container [2021-02-23 22:32:10,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:32:10" (2/3) ... [2021-02-23 22:32:10,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b98c67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:32:10, skipping insertion in model container [2021-02-23 22:32:10,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:32:10" (3/3) ... [2021-02-23 22:32:10,685 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2021-02-23 22:32:10,699 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:32:10,708 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-02-23 22:32:10,728 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-02-23 22:32:10,787 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:32:10,788 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:32:10,788 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:32:10,788 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:32:10,791 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:32:10,791 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:32:10,792 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:32:10,792 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:32:10,832 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2021-02-23 22:32:10,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-23 22:32:10,849 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:32:10,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:32:10,851 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:32:10,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:32:10,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1152268417, now seen corresponding path program 1 times [2021-02-23 22:32:10,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:32:10,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413622981] [2021-02-23 22:32:10,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:32:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:32:11,084 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:32:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:32:11,144 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:32:11,176 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:32:11,177 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:32:11,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:32:11,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:32:11 BoogieIcfgContainer [2021-02-23 22:32:11,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:32:11,217 INFO L168 Benchmark]: Toolchain (without parser) took 1380.86 ms. Allocated memory is still 177.2 MB. Free memory was 153.6 MB in the beginning and 149.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.0 MB. Max. memory is 8.0 GB. [2021-02-23 22:32:11,218 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 177.2 MB. Free memory was 150.2 MB in the beginning and 150.1 MB in the end (delta: 45.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:32:11,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.72 ms. Allocated memory is still 177.2 MB. Free memory was 152.4 MB in the beginning and 142.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:32:11,220 INFO L168 Benchmark]: Boogie Preprocessor took 34.24 ms. Allocated memory is still 177.2 MB. Free memory was 142.9 MB in the beginning and 141.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:32:11,221 INFO L168 Benchmark]: RCFGBuilder took 551.02 ms. Allocated memory is still 177.2 MB. Free memory was 141.4 MB in the beginning and 127.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-23 22:32:11,222 INFO L168 Benchmark]: TraceAbstraction took 544.86 ms. Allocated memory is still 177.2 MB. Free memory was 127.4 MB in the beginning and 149.8 MB in the end (delta: -22.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:32:11,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 177.2 MB. Free memory was 150.2 MB in the beginning and 150.1 MB in the end (delta: 45.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 226.72 ms. Allocated memory is still 177.2 MB. Free memory was 152.4 MB in the beginning and 142.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.24 ms. Allocated memory is still 177.2 MB. Free memory was 142.9 MB in the beginning and 141.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 551.02 ms. Allocated memory is still 177.2 MB. Free memory was 141.4 MB in the beginning and 127.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 544.86 ms. Allocated memory is still 177.2 MB. Free memory was 127.4 MB in the beginning and 149.8 MB in the end (delta: -22.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 12. Possible FailurePath: [L7] float a; [L8] double b; [L11] a=1.25L VAL [a=5/4] [L12] COND TRUE !(a==1.25) VAL [a=5/4] [L12] reach_error() VAL [a=5/4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 41 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 17 NumberOfCodeBlocks, 17 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...