/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/floats-cbmc-regression/float2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:29:43,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:29:43,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:29:43,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:29:43,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:29:43,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:29:43,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:29:43,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:29:43,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:29:43,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:29:43,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:29:43,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:29:43,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:29:43,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:29:43,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:29:43,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:29:43,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:29:43,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:29:43,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:29:43,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:29:43,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:29:43,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:29:43,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:29:43,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:29:43,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:29:43,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:29:43,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:29:43,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:29:43,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:29:43,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:29:43,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:29:43,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:29:43,675 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:29:43,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:29:43,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:29:43,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:29:43,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:29:43,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:29:43,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:29:43,678 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:29:43,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:29:43,678 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:29:43,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:29:43,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:29:43,679 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:29:43,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:29:43,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:29:43,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:29:43,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:29:43,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:29:43,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:29:43,680 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:29:43,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:29:44,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:29:44,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:29:44,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:29:44,127 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:29:44,127 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:29:44,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float2.c [2021-02-22 01:29:44,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/340f46c1b/b519e58f2ef24133854108b0c9b444a0/FLAG2e36c69c4 [2021-02-22 01:29:44,731 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:29:44,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c [2021-02-22 01:29:44,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/340f46c1b/b519e58f2ef24133854108b0c9b444a0/FLAG2e36c69c4 [2021-02-22 01:29:45,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/340f46c1b/b519e58f2ef24133854108b0c9b444a0 [2021-02-22 01:29:45,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:29:45,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:29:45,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:29:45,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:29:45,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:29:45,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:29:45" (1/1) ... [2021-02-22 01:29:45,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@226d111b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:29:45, skipping insertion in model container [2021-02-22 01:29:45,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:29:45" (1/1) ... [2021-02-22 01:29:45,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:29:45,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:29:45,358 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] [2021-02-22 01:29:45,362 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] [2021-02-22 01:29:45,363 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] [2021-02-22 01:29:45,365 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] [2021-02-22 01:29:45,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:29:45,377 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:29:45,393 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] [2021-02-22 01:29:45,394 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] [2021-02-22 01:29:45,396 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] [2021-02-22 01:29:45,397 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] [2021-02-22 01:29:45,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:29:45,414 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:29:45,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:29:45 WrapperNode [2021-02-22 01:29:45,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:29:45,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:29:45,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:29:45,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:29:45,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:29:45" (1/1) ... [2021-02-22 01:29:45,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:29:45" (1/1) ... [2021-02-22 01:29:45,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:29:45" (1/1) ... [2021-02-22 01:29:45,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:29:45" (1/1) ... [2021-02-22 01:29:45,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:29:45" (1/1) ... [2021-02-22 01:29:45,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:29:45" (1/1) ... [2021-02-22 01:29:45,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:29:45" (1/1) ... [2021-02-22 01:29:45,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:29:45,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:29:45,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:29:45,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:29:45,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:29:45" (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 [2021-02-22 01:29:45,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:29:45,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:29:45,554 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:29:45,555 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:29:45,555 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:29:45,555 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:29:45,555 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:29:45,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:29:45,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:29:45,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:29:45,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:29:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:29:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:29:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:29:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:29:45,873 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:29:45,874 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:29:45,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:29:45 BoogieIcfgContainer [2021-02-22 01:29:45,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:29:45,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:29:45,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:29:45,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:29:45,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:29:45" (1/3) ... [2021-02-22 01:29:45,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4f7015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:29:45, skipping insertion in model container [2021-02-22 01:29:45,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:29:45" (2/3) ... [2021-02-22 01:29:45,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4f7015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:29:45, skipping insertion in model container [2021-02-22 01:29:45,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:29:45" (3/3) ... [2021-02-22 01:29:45,894 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2021-02-22 01:29:45,912 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:29:45,920 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-02-22 01:29:45,956 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-02-22 01:29:45,980 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:29:45,980 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:29:45,980 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:29:45,980 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:29:45,981 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:29:45,981 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:29:45,981 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:29:45,981 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:29:45,997 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2021-02-22 01:29:46,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-22 01:29:46,021 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:29:46,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:29:46,022 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:29:46,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:29:46,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1152268417, now seen corresponding path program 1 times [2021-02-22 01:29:46,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:29:46,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192795413] [2021-02-22 01:29:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:29:46,117 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:29:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:29:46,181 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:29:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:29:46,216 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:29:46,268 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:29:46,268 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:29:46,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:29:46,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:29:46 BoogieIcfgContainer [2021-02-22 01:29:46,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:29:46,299 INFO L168 Benchmark]: Toolchain (without parser) took 1185.57 ms. Allocated memory is still 162.5 MB. Free memory was 139.5 MB in the beginning and 137.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:29:46,302 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 162.5 MB. Free memory is still 134.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:29:46,303 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.18 ms. Allocated memory is still 162.5 MB. Free memory was 138.6 MB in the beginning and 128.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:29:46,307 INFO L168 Benchmark]: Boogie Preprocessor took 35.28 ms. Allocated memory is still 162.5 MB. Free memory was 128.8 MB in the beginning and 127.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:29:46,308 INFO L168 Benchmark]: RCFGBuilder took 424.24 ms. Allocated memory is still 162.5 MB. Free memory was 127.3 MB in the beginning and 113.5 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-22 01:29:46,309 INFO L168 Benchmark]: TraceAbstraction took 414.72 ms. Allocated memory is still 162.5 MB. Free memory was 113.0 MB in the beginning and 137.3 MB in the end (delta: -24.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:29:46,319 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 162.5 MB. Free memory is still 134.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 291.18 ms. Allocated memory is still 162.5 MB. Free memory was 138.6 MB in the beginning and 128.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.28 ms. Allocated memory is still 162.5 MB. Free memory was 128.8 MB in the beginning and 127.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 424.24 ms. Allocated memory is still 162.5 MB. Free memory was 127.3 MB in the beginning and 113.5 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 414.72 ms. Allocated memory is still 162.5 MB. Free memory was 113.0 MB in the beginning and 137.3 MB in the end (delta: -24.3 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 [L12] COND TRUE !(a==1.25) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 41 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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: 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...