/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:07:49,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:07:49,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:07:49,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:07:49,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:07:49,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:07:49,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:07:49,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:07:49,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:07:49,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:07:49,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:07:49,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:07:49,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:07:49,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:07:49,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:07:49,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:07:49,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:07:49,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:07:49,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:07:49,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:07:49,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:07:49,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:07:49,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:07:49,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:07:49,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:07:49,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 20:07:49,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 20:07:49,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 20:07:49,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 20:07:49,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 20:07:49,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 20:07:49,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 20:07:49,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 20:07:49,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:07:49,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:07:49,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:07:49,261 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:07:49,289 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:07:49,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:07:49,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:07:49,292 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:07:49,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:07:49,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:07:49,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:07:49,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:07:49,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:07:49,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:07:49,294 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:07:49,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:07:49,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:07:49,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:07:49,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:07:49,296 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:07:49,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:07:49,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:07:49,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:07:49,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:07:49,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:07:49,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:07:49,297 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:07:49,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:07:49,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:07:49,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:07:49,745 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:07:49,746 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:07:49,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float13.c [2021-02-21 20:07:49,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b25bdf80e/16eabe1172394b1f8426cbd6b11cfa65/FLAG940eaace5 [2021-02-21 20:07:50,442 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:07:50,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float13.c [2021-02-21 20:07:50,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b25bdf80e/16eabe1172394b1f8426cbd6b11cfa65/FLAG940eaace5 [2021-02-21 20:07:50,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b25bdf80e/16eabe1172394b1f8426cbd6b11cfa65 [2021-02-21 20:07:50,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:07:50,843 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:07:50,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:07:50,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:07:50,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:07:50,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:07:50" (1/1) ... [2021-02-21 20:07:50,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5486722f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:07:50, skipping insertion in model container [2021-02-21 20:07:50,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:07:50" (1/1) ... [2021-02-21 20:07:50,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:07:50,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:07:51,026 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/float13.c[497,510] [2021-02-21 20:07:51,030 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/float13.c[569,582] [2021-02-21 20:07:51,031 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/float13.c[631,644] [2021-02-21 20:07:51,032 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/float13.c[693,706] [2021-02-21 20:07:51,034 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/float13.c[764,777] [2021-02-21 20:07:51,035 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/float13.c[836,849] [2021-02-21 20:07:51,036 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/float13.c[895,908] [2021-02-21 20:07:51,037 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/float13.c[954,967] [2021-02-21 20:07:51,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:07:51,053 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:07:51,068 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/float13.c[497,510] [2021-02-21 20:07:51,069 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/float13.c[569,582] [2021-02-21 20:07:51,070 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/float13.c[631,644] [2021-02-21 20:07:51,071 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/float13.c[693,706] [2021-02-21 20:07:51,072 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/float13.c[764,777] [2021-02-21 20:07:51,074 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/float13.c[836,849] [2021-02-21 20:07:51,075 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/float13.c[895,908] [2021-02-21 20:07:51,076 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/float13.c[954,967] [2021-02-21 20:07:51,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:07:51,096 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:07:51,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:07:51 WrapperNode [2021-02-21 20:07:51,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:07:51,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:07:51,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:07:51,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:07:51,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:07:51" (1/1) ... [2021-02-21 20:07:51,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:07:51" (1/1) ... [2021-02-21 20:07:51,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:07:51" (1/1) ... [2021-02-21 20:07:51,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:07:51" (1/1) ... [2021-02-21 20:07:51,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:07:51" (1/1) ... [2021-02-21 20:07:51,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:07:51" (1/1) ... [2021-02-21 20:07:51,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:07:51" (1/1) ... [2021-02-21 20:07:51,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:07:51,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:07:51,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:07:51,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:07:51,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:07:51" (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 [2021-02-21 20:07:51,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:07:51,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:07:51,222 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:07:51,222 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:07:51,222 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:07:51,223 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:07:51,223 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:07:51,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:07:51,223 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:07:51,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:07:51,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:07:51,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:07:51,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:07:51,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:07:51,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:07:51,499 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:07:51,499 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 20:07:51,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:07:51 BoogieIcfgContainer [2021-02-21 20:07:51,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:07:51,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:07:51,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:07:51,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:07:51,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:07:50" (1/3) ... [2021-02-21 20:07:51,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0e1ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:07:51, skipping insertion in model container [2021-02-21 20:07:51,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:07:51" (2/3) ... [2021-02-21 20:07:51,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0e1ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:07:51, skipping insertion in model container [2021-02-21 20:07:51,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:07:51" (3/3) ... [2021-02-21 20:07:51,516 INFO L111 eAbstractionObserver]: Analyzing ICFG float13.c [2021-02-21 20:07:51,536 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:07:51,551 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2021-02-21 20:07:51,597 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-02-21 20:07:51,644 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:07:51,644 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:07:51,644 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:07:51,645 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:07:51,645 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:07:51,645 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:07:51,646 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:07:51,646 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:07:51,682 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2021-02-21 20:07:51,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-21 20:07:51,695 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:07:51,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:07:51,699 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:07:51,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:07:51,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1968073580, now seen corresponding path program 1 times [2021-02-21 20:07:51,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:07:51,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962457163] [2021-02-21 20:07:51,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:07:51,881 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:07:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:07:51,970 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:07:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:07:52,014 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:07:52,071 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:07:52,072 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:07:52,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:07:52,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:07:52 BoogieIcfgContainer [2021-02-21 20:07:52,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:07:52,105 INFO L168 Benchmark]: Toolchain (without parser) took 1268.50 ms. Allocated memory is still 162.5 MB. Free memory was 138.8 MB in the beginning and 136.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 8.0 GB. [2021-02-21 20:07:52,106 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 162.5 MB. Free memory is still 137.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:07:52,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.88 ms. Allocated memory is still 162.5 MB. Free memory was 137.8 MB in the beginning and 127.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:07:52,111 INFO L168 Benchmark]: Boogie Preprocessor took 40.09 ms. Allocated memory is still 162.5 MB. Free memory was 127.3 MB in the beginning and 125.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:07:52,112 INFO L168 Benchmark]: RCFGBuilder took 362.99 ms. Allocated memory is still 162.5 MB. Free memory was 125.7 MB in the beginning and 109.0 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-21 20:07:52,114 INFO L168 Benchmark]: TraceAbstraction took 595.41 ms. Allocated memory is still 162.5 MB. Free memory was 108.5 MB in the beginning and 136.5 MB in the end (delta: -28.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:07:52,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 162.5 MB. Free memory is still 137.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 249.88 ms. Allocated memory is still 162.5 MB. Free memory was 137.8 MB in the beginning and 127.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.09 ms. Allocated memory is still 162.5 MB. Free memory was 127.3 MB in the beginning and 125.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 362.99 ms. Allocated memory is still 162.5 MB. Free memory was 125.7 MB in the beginning and 109.0 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 595.41 ms. Allocated memory is still 162.5 MB. Free memory was 108.5 MB in the beginning and 136.5 MB in the end (delta: -28.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 7. Possible FailurePath: [L5] const float plus_infinity = 1.0f/0.0f; [L6] const float minus_infinity = 0.0f/-0.0f; [L7] const float NaN = 0.0f * (1.0f/0.0f); [L11] _Bool temp; [L14] temp = NaN < plus_infinity [L15] COND TRUE !(!temp) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 64 locations, 8 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=61occurred 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...