/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:31:23,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:31:23,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:31:23,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:31:23,807 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:31:23,828 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:31:23,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:31:23,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:31:23,830 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:31:23,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:31:23,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:31:23,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:31:23,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:31:23,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:31:23,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:31:23,832 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:31:23,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:31:23,832 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:31:23,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:31:23,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:31:23,833 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:31:23,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:31:23,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:31:23,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:31:23,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:31:23,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:31:23,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:31:23,835 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:31:23,835 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:31:24,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:31:24,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:31:24,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:31:24,270 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:31:24,271 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:31:24,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2021-02-22 01:31:24,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84bb26ba1/d07335a9f51a493585d453cede8b6b16/FLAGe3fe4588c [2021-02-22 01:31:25,013 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:31:25,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2021-02-22 01:31:25,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84bb26ba1/d07335a9f51a493585d453cede8b6b16/FLAGe3fe4588c [2021-02-22 01:31:25,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84bb26ba1/d07335a9f51a493585d453cede8b6b16 [2021-02-22 01:31:25,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:31:25,349 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:31:25,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:25,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:31:25,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:31:25,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a126de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25, skipping insertion in model container [2021-02-22 01:31:25,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:31:25,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:31:25,681 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/double_req_bl_1130a.c[4166,4179] [2021-02-22 01:31:25,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:25,693 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:31:25,795 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/double_req_bl_1130a.c[4166,4179] [2021-02-22 01:31:25,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:25,833 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:31:25,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25 WrapperNode [2021-02-22 01:31:25,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:25,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:31:25,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:31:25,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:31:25,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:31:25,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:31:25,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:31:25,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:31:25,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:31:26,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:31:26,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:31:26,067 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:31:26,067 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-22 01:31:26,067 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2021-02-22 01:31:26,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-22 01:31:26,068 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:31:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:31:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:31:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:31:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:31:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-22 01:31:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-22 01:31:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2021-02-22 01:31:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-22 01:31:26,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:31:26,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:31:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-22 01:31:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:31:26,074 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-22 01:31:26,075 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:31:26,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:31:26,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:31:26,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-22 01:31:26,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:31:26,990 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:31:26,990 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-02-22 01:31:26,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:26 BoogieIcfgContainer [2021-02-22 01:31:26,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:31:26,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:31:26,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:31:27,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:31:27,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:31:25" (1/3) ... [2021-02-22 01:31:27,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5acc4e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:27, skipping insertion in model container [2021-02-22 01:31:27,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (2/3) ... [2021-02-22 01:31:27,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5acc4e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:27, skipping insertion in model container [2021-02-22 01:31:27,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:26" (3/3) ... [2021-02-22 01:31:27,005 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2021-02-22 01:31:27,016 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:31:27,021 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:31:27,040 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:31:27,077 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:31:27,077 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:31:27,078 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:31:27,078 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:31:27,078 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:31:27,078 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:31:27,079 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:31:27,079 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:31:27,105 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states. [2021-02-22 01:31:27,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-22 01:31:27,122 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:27,123 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] [2021-02-22 01:31:27,123 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:27,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:27,133 INFO L82 PathProgramCache]: Analyzing trace with hash 783378974, now seen corresponding path program 1 times [2021-02-22 01:31:27,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:27,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020223255] [2021-02-22 01:31:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:27,218 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:27,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:27,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:27,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:27,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:27,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:31:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:27,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:27,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:27,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-22 01:31:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:27,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:27,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:27,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:27,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:27,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:31:27,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020223255] [2021-02-22 01:31:27,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:31:27,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:31:27,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903208492] [2021-02-22 01:31:27,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:31:27,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:31:27,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:31:27,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:31:27,496 INFO L87 Difference]: Start difference. First operand 210 states. Second operand 4 states. [2021-02-22 01:31:28,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:31:28,155 INFO L93 Difference]: Finished difference Result 388 states and 478 transitions. [2021-02-22 01:31:28,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:31:28,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2021-02-22 01:31:28,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:31:28,169 INFO L225 Difference]: With dead ends: 388 [2021-02-22 01:31:28,170 INFO L226 Difference]: Without dead ends: 202 [2021-02-22 01:31:28,175 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 [2021-02-22 01:31:28,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-02-22 01:31:28,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-02-22 01:31:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2021-02-22 01:31:28,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 229 transitions. [2021-02-22 01:31:28,242 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 229 transitions. Word has length 51 [2021-02-22 01:31:28,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:31:28,243 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 229 transitions. [2021-02-22 01:31:28,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:31:28,243 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 229 transitions. [2021-02-22 01:31:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-22 01:31:28,246 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:28,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:31:28,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:31:28,247 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:28,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:28,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1917323870, now seen corresponding path program 1 times [2021-02-22 01:31:28,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:28,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663106695] [2021-02-22 01:31:28,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:28,252 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:28,377 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:28,475 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:28,514 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:31:28,514 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:31:28,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:31:28,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:31:28 BoogieIcfgContainer [2021-02-22 01:31:28,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:31:28,537 INFO L168 Benchmark]: Toolchain (without parser) took 3199.38 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 138.0 MB in the beginning and 128.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 41.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:28,538 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 153.1 MB. Free memory is still 128.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:31:28,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 479.87 ms. Allocated memory is still 153.1 MB. Free memory was 136.7 MB in the beginning and 136.3 MB in the end (delta: 365.0 kB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:28,540 INFO L168 Benchmark]: Boogie Preprocessor took 122.52 ms. Allocated memory is still 153.1 MB. Free memory was 136.3 MB in the beginning and 134.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:28,540 INFO L168 Benchmark]: RCFGBuilder took 1035.17 ms. Allocated memory is still 153.1 MB. Free memory was 134.0 MB in the beginning and 89.9 MB in the end (delta: 44.1 MB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:28,541 INFO L168 Benchmark]: TraceAbstraction took 1538.60 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 89.4 MB in the beginning and 128.5 MB in the end (delta: -39.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:31:28,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 153.1 MB. Free memory is still 128.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 479.87 ms. Allocated memory is still 153.1 MB. Free memory was 136.7 MB in the beginning and 136.3 MB in the end (delta: 365.0 kB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 122.52 ms. Allocated memory is still 153.1 MB. Free memory was 136.3 MB in the beginning and 134.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1035.17 ms. Allocated memory is still 153.1 MB. Free memory was 134.0 MB in the beginning and 89.9 MB in the end (delta: 44.1 MB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1538.60 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 89.4 MB in the beginning and 128.5 MB in the end (delta: -39.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 193]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 43, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L189] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); [L189] RET, EXPR fmod_double(x, y) [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L193] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 217 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 45 SDslu, 177 SDs, 0 SdLazy, 251 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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=210occurred 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...