/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_1052d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:37:54,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:37:54,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:37:54,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 17:37:54,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 17:37:54,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 17:37:54,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 17:37:54,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 17:37:54,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 17:37:54,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 17:37:54,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 17:37:54,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 17:37:54,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:37:54,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:37:54,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:37:54,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:37:54,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:37:54,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:37:54,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:37:54,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:37:54,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:37:54,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:37:54,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:37:54,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:37:54,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:37:54,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:37:54,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:37:54,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:37:54,661 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 17:37:54,685 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:37:54,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:37:54,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:37:54,691 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:37:54,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:37:54,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:37:54,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:37:54,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:37:54,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:37:54,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:37:54,693 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:37:54,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:37:54,693 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:37:54,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:37:54,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:37:54,694 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:37:54,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:37:54,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:37:54,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:37:54,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:37:54,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:37:54,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:37:54,696 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:37:55,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:37:55,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:37:55,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:37:55,115 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:37:55,116 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:37:55,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052d.c [2021-02-23 17:37:55,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9678fc1ab/35b1d698822a40d895be97fc946bc3f1/FLAG885e18f30 [2021-02-23 17:37:55,846 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:37:55,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1052d.c [2021-02-23 17:37:55,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9678fc1ab/35b1d698822a40d895be97fc946bc3f1/FLAG885e18f30 [2021-02-23 17:37:56,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9678fc1ab/35b1d698822a40d895be97fc946bc3f1 [2021-02-23 17:37:56,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:37:56,231 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:37:56,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:56,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:37:56,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:37:56,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:56" (1/1) ... [2021-02-23 17:37:56,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4332501b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:56, skipping insertion in model container [2021-02-23 17:37:56,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:56" (1/1) ... [2021-02-23 17:37:56,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:37:56,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:37:56,474 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_1052d.c[1740,1753] [2021-02-23 17:37:56,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:56,488 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:37:56,516 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_1052d.c[1740,1753] [2021-02-23 17:37:56,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:56,537 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:37:56,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:56 WrapperNode [2021-02-23 17:37:56,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:56,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:37:56,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:37:56,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:37:56,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:56" (1/1) ... [2021-02-23 17:37:56,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:56" (1/1) ... [2021-02-23 17:37:56,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:56" (1/1) ... [2021-02-23 17:37:56,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:56" (1/1) ... [2021-02-23 17:37:56,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:56" (1/1) ... [2021-02-23 17:37:56,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:56" (1/1) ... [2021-02-23 17:37:56,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:56" (1/1) ... [2021-02-23 17:37:56,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:37:56,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:37:56,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:37:56,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:37:56,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:56" (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 17:37:56,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:37:56,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:37:56,751 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:37:56,751 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2021-02-23 17:37:56,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2021-02-23 17:37:56,752 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:37:56,752 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:37:56,752 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:37:56,753 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:37:56,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:37:56,754 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2021-02-23 17:37:56,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 17:37:56,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:37:56,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:37:56,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:37:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 17:37:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2021-02-23 17:37:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:37:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:37:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:37:56,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:37:57,322 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:37:57,323 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-23 17:37:57,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:57 BoogieIcfgContainer [2021-02-23 17:37:57,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:37:57,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:37:57,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:37:57,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:37:57,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:37:56" (1/3) ... [2021-02-23 17:37:57,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739fed1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:57, skipping insertion in model container [2021-02-23 17:37:57,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:56" (2/3) ... [2021-02-23 17:37:57,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739fed1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:57, skipping insertion in model container [2021-02-23 17:37:57,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:57" (3/3) ... [2021-02-23 17:37:57,334 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052d.c [2021-02-23 17:37:57,341 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:37:57,347 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:37:57,368 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:37:57,396 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:37:57,396 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:37:57,396 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:37:57,397 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:37:57,397 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:37:57,397 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:37:57,397 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:37:57,397 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:37:57,414 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states. [2021-02-23 17:37:57,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-23 17:37:57,425 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:57,426 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] [2021-02-23 17:37:57,426 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:57,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:57,433 INFO L82 PathProgramCache]: Analyzing trace with hash -267954634, now seen corresponding path program 1 times [2021-02-23 17:37:57,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:57,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442104199] [2021-02-23 17:37:57,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:57,525 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:57,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:57,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:57,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:57,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:57,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:37:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:57,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:57,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:57,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:37:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:57,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:57,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:57,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:57,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:57,793 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 17:37:57,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442104199] [2021-02-23 17:37:57,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:37:57,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:37:57,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273791080] [2021-02-23 17:37:57,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:37:57,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:37:57,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:37:57,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:37:57,822 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 4 states. [2021-02-23 17:37:58,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:37:58,291 INFO L93 Difference]: Finished difference Result 161 states and 194 transitions. [2021-02-23 17:37:58,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:37:58,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2021-02-23 17:37:58,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:37:58,308 INFO L225 Difference]: With dead ends: 161 [2021-02-23 17:37:58,308 INFO L226 Difference]: Without dead ends: 83 [2021-02-23 17:37:58,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 17:37:58,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-23 17:37:58,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-02-23 17:37:58,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-02-23 17:37:58,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2021-02-23 17:37:58,367 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 36 [2021-02-23 17:37:58,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:37:58,368 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2021-02-23 17:37:58,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:37:58,368 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2021-02-23 17:37:58,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-23 17:37:58,371 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:58,371 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] [2021-02-23 17:37:58,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:37:58,372 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:58,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:58,372 INFO L82 PathProgramCache]: Analyzing trace with hash 558445971, now seen corresponding path program 1 times [2021-02-23 17:37:58,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:58,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25460905] [2021-02-23 17:37:58,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:58,376 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:58,443 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:58,510 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:58,568 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:37:58,569 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:37:58,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:37:58,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:37:58 BoogieIcfgContainer [2021-02-23 17:37:58,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:37:58,600 INFO L168 Benchmark]: Toolchain (without parser) took 2379.51 ms. Allocated memory was 159.4 MB in the beginning and 199.2 MB in the end (delta: 39.8 MB). Free memory was 136.5 MB in the beginning and 163.4 MB in the end (delta: -26.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:58,601 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 159.4 MB. Free memory is still 132.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:37:58,603 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.61 ms. Allocated memory is still 159.4 MB. Free memory was 135.4 MB in the beginning and 125.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:58,605 INFO L168 Benchmark]: Boogie Preprocessor took 86.24 ms. Allocated memory is still 159.4 MB. Free memory was 125.0 MB in the beginning and 123.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:58,607 INFO L168 Benchmark]: RCFGBuilder took 698.37 ms. Allocated memory is still 159.4 MB. Free memory was 123.1 MB in the beginning and 135.5 MB in the end (delta: -12.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:58,608 INFO L168 Benchmark]: TraceAbstraction took 1269.37 ms. Allocated memory was 159.4 MB in the beginning and 199.2 MB in the end (delta: 39.8 MB). Free memory was 135.0 MB in the beginning and 163.4 MB in the end (delta: -28.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:58,617 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 159.4 MB. Free memory is still 132.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 302.61 ms. Allocated memory is still 159.4 MB. Free memory was 135.4 MB in the beginning and 125.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.24 ms. Allocated memory is still 159.4 MB. Free memory was 125.0 MB in the beginning and 123.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 698.37 ms. Allocated memory is still 159.4 MB. Free memory was 123.1 MB in the beginning and 135.5 MB in the end (delta: -12.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1269.37 ms. Allocated memory was 159.4 MB in the beginning and 199.2 MB in the end (delta: 39.8 MB). Free memory was 135.0 MB in the beginning and 163.4 MB in the end (delta: -28.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 82]: 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 81, overapproximation of bitwiseAnd at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L13] static const float huge_floor = 1.0e30; [L77] float x = 0.0f; [L78] CALL, EXPR floor_float(x) [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f [L25] COND FALSE !(j0 < 23) [L45] COND TRUE !((ix) < 0x7f800000L) [L46] return x + x; [L78] RET, EXPR floor_float(x) [L78] float res = floor_float(x); [L81] EXPR res == 0.0f && __signbit_float(res) == 0 [L81] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L82] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 94 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 96 SDtfs, 17 SDslu, 70 SDs, 0 SdLazy, 106 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred 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...