/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/float-newlib/float_req_bl_0730a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:37:37,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:37:37,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:37:37,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 17:37:37,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 17:37:37,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 17:37:37,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 17:37:37,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 17:37:37,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 17:37:37,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 17:37:37,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 17:37:37,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 17:37:37,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:37:37,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:37:37,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:37:37,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:37:37,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:37:37,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:37:37,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:37:37,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:37:37,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:37:37,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:37:37,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:37:37,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:37:37,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:37:37,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:37:37,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:37:37,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:37:37,719 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 17:37:37,731 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:37:37,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:37:37,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:37:37,733 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:37:37,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:37:37,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:37:37,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:37:37,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:37:37,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:37:37,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:37:37,735 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:37:37,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:37:37,736 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:37:37,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:37:37,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:37:37,737 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:37:37,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:37:37,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:37:37,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:37:37,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:37:37,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:37:37,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:37:37,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:37:38,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:37:38,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:37:38,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:37:38,139 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:37:38,139 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:37:38,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2021-02-23 17:37:38,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c5d31d4d/d52e1662bc484db6b1eb9334bd4de8ca/FLAGbfab50060 [2021-02-23 17:37:38,800 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:37:38,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2021-02-23 17:37:38,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c5d31d4d/d52e1662bc484db6b1eb9334bd4de8ca/FLAGbfab50060 [2021-02-23 17:37:39,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c5d31d4d/d52e1662bc484db6b1eb9334bd4de8ca [2021-02-23 17:37:39,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:37:39,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:37:39,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:39,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:37:39,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:37:39,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:39" (1/1) ... [2021-02-23 17:37:39,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29792ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:39, skipping insertion in model container [2021-02-23 17:37:39,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:39" (1/1) ... [2021-02-23 17:37:39,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:37:39,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:37:39,521 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c[2102,2115] [2021-02-23 17:37:39,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:39,537 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:37:39,568 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c[2102,2115] [2021-02-23 17:37:39,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:39,589 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:37:39,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:39 WrapperNode [2021-02-23 17:37:39,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:39,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:37:39,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:37:39,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:37:39,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:39" (1/1) ... [2021-02-23 17:37:39,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:39" (1/1) ... [2021-02-23 17:37:39,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:39" (1/1) ... [2021-02-23 17:37:39,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:39" (1/1) ... [2021-02-23 17:37:39,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:39" (1/1) ... [2021-02-23 17:37:39,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:39" (1/1) ... [2021-02-23 17:37:39,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:39" (1/1) ... [2021-02-23 17:37:39,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:37:39,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:37:39,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:37:39,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:37:39,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:39" (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 17:37:39,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:37:39,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:37:39,755 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:37:39,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2021-02-23 17:37:39,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2021-02-23 17:37:39,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:37:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:37:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:37:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:37:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:37:39,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-23 17:37:39,757 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2021-02-23 17:37:39,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 17:37:39,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:37:39,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:37:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:37:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 17:37:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2021-02-23 17:37:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:37:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:37:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:37:39,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:37:40,316 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:37:40,317 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-02-23 17:37:40,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:40 BoogieIcfgContainer [2021-02-23 17:37:40,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:37:40,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:37:40,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:37:40,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:37:40,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:37:39" (1/3) ... [2021-02-23 17:37:40,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c14e2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:40, skipping insertion in model container [2021-02-23 17:37:40,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:39" (2/3) ... [2021-02-23 17:37:40,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c14e2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:40, skipping insertion in model container [2021-02-23 17:37:40,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:40" (3/3) ... [2021-02-23 17:37:40,327 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730a.c [2021-02-23 17:37:40,333 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:37:40,339 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:37:40,366 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:37:40,399 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:37:40,399 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:37:40,399 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:37:40,399 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:37:40,399 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:37:40,399 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:37:40,400 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:37:40,400 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:37:40,417 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2021-02-23 17:37:40,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-23 17:37:40,428 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:40,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:37:40,429 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:40,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:40,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1039374263, now seen corresponding path program 1 times [2021-02-23 17:37:40,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:40,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523691168] [2021-02-23 17:37:40,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:40,516 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:40,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:40,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:40,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:40,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:40,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:37:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:40,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:40,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:40,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 17:37:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:40,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:40,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:40,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:40,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:40,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-02-23 17:37:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:40,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:40,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:40,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:40,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:37:40,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523691168] [2021-02-23 17:37:40,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:37:40,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:37:40,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132067472] [2021-02-23 17:37:40,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:37:40,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:37:40,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:37:40,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:37:40,859 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 4 states. [2021-02-23 17:37:41,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:37:41,288 INFO L93 Difference]: Finished difference Result 205 states and 244 transitions. [2021-02-23 17:37:41,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:37:41,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2021-02-23 17:37:41,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:37:41,301 INFO L225 Difference]: With dead ends: 205 [2021-02-23 17:37:41,301 INFO L226 Difference]: Without dead ends: 109 [2021-02-23 17:37:41,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:37:41,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-02-23 17:37:41,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-02-23 17:37:41,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-02-23 17:37:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2021-02-23 17:37:41,366 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 46 [2021-02-23 17:37:41,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:37:41,366 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2021-02-23 17:37:41,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:37:41,367 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2021-02-23 17:37:41,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-23 17:37:41,370 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:41,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:37:41,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:37:41,371 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:41,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:41,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1200530086, now seen corresponding path program 1 times [2021-02-23 17:37:41,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:41,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594339369] [2021-02-23 17:37:41,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:41,376 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:41,448 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:41,528 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:41,593 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:37:41,593 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:37:41,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:37:41,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:37:41 BoogieIcfgContainer [2021-02-23 17:37:41,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:37:41,627 INFO L168 Benchmark]: Toolchain (without parser) took 2443.50 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 127.6 MB in the beginning and 129.8 MB in the end (delta: -2.2 MB). Peak memory consumption was 29.8 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:41,629 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:37:41,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.40 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 115.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:41,633 INFO L168 Benchmark]: Boogie Preprocessor took 53.38 ms. Allocated memory is still 152.0 MB. Free memory was 115.5 MB in the beginning and 113.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:41,634 INFO L168 Benchmark]: RCFGBuilder took 670.18 ms. Allocated memory is still 152.0 MB. Free memory was 113.7 MB in the beginning and 121.6 MB in the end (delta: -7.9 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:41,635 INFO L168 Benchmark]: TraceAbstraction took 1300.47 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 121.0 MB in the beginning and 129.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 22.2 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:41,649 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 152.0 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 393.40 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 115.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.38 ms. Allocated memory is still 152.0 MB. Free memory was 115.5 MB in the beginning and 113.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 670.18 ms. Allocated memory is still 152.0 MB. Free memory was 113.7 MB in the beginning and 121.6 MB in the end (delta: -7.9 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1300.47 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 121.0 MB in the beginning and 129.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 22.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 109]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 29, overapproximation of bitwiseAnd at line 91. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L103] float x = 1.0f / 0.0f; [L105] CALL, EXPR __ieee754_sqrtf(x) [L17] float z; [L18] __uint32_t r, hx; [L19] __int32_t ix, s, q, m, t, i; [L22] ieee_float_shape_type gf_u; [L23] gf_u.value = (x) [L24] EXPR gf_u.word [L24] (ix) = gf_u.word [L26] hx = ix & 0x7fffffff [L28] COND TRUE !((hx) < 0x7f800000L) [L29] return x * x + x; [L105] RET, EXPR __ieee754_sqrtf(x) [L105] float res = __ieee754_sqrtf(x); [L108] CALL, EXPR isinf_float(res) [L85] __int32_t ix; [L87] ieee_float_shape_type gf_u; [L88] gf_u.value = (x) [L89] EXPR gf_u.word [L89] (ix) = gf_u.word [L91] ix &= 0x7fffffff [L92] return ((ix) == 0x7f800000L); [L108] RET, EXPR isinf_float(res) [L108] COND TRUE !isinf_float(res) [L109] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 119 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 122 SDtfs, 27 SDslu, 90 SDs, 0 SdLazy, 128 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, 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...