/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/double_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:10:15,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:10:15,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:10:15,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:10:15,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:10:15,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:10:15,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:10:15,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:10:15,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:10:15,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:10:15,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:10:15,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:10:15,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:10:15,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:10:15,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:10:15,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:10:15,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:10:15,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:10:15,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:10:15,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:10:15,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:10:15,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:10:15,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:10:15,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:10:15,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:10:15,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:10:15,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:10:15,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:10:15,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:10:15,440 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:10:15,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:10:15,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:10:15,443 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:10:15,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:10:15,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:10:15,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:10:15,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:10:15,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:10:15,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:10:15,445 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:10:15,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:10:15,445 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:10:15,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:10:15,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:10:15,446 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:10:15,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:10:15,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:10:15,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:15,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:10:15,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:10:15,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:10:15,447 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:10:15,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:10:15,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:10:15,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:10:15,847 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:10:15,847 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:10:15,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2021-02-21 20:10:15,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed1f3ed24/84f9a744eee04a2b85a97a05f5e21358/FLAG78471e5ed [2021-02-21 20:10:16,611 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:10:16,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2021-02-21 20:10:16,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed1f3ed24/84f9a744eee04a2b85a97a05f5e21358/FLAG78471e5ed [2021-02-21 20:10:16,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed1f3ed24/84f9a744eee04a2b85a97a05f5e21358 [2021-02-21 20:10:16,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:10:16,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:10:16,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:16,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:10:16,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:10:16,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:16" (1/1) ... [2021-02-21 20:10:16,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d62272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:16, skipping insertion in model container [2021-02-21 20:10:16,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:16" (1/1) ... [2021-02-21 20:10:16,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:10:16,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:10:17,187 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_1131b.c[4119,4132] [2021-02-21 20:10:17,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:17,211 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:10:17,266 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_1131b.c[4119,4132] [2021-02-21 20:10:17,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:17,285 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:10:17,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17 WrapperNode [2021-02-21 20:10:17,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:17,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:10:17,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:10:17,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:10:17,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (1/1) ... [2021-02-21 20:10:17,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (1/1) ... [2021-02-21 20:10:17,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (1/1) ... [2021-02-21 20:10:17,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (1/1) ... [2021-02-21 20:10:17,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (1/1) ... [2021-02-21 20:10:17,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (1/1) ... [2021-02-21 20:10:17,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (1/1) ... [2021-02-21 20:10:17,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:10:17,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:10:17,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:10:17,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:10:17,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:17,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:10:17,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:10:17,470 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:10:17,471 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2021-02-21 20:10:17,471 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2021-02-21 20:10:17,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:10:17,471 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:10:17,472 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:10:17,472 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:10:17,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:10:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-21 20:10:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2021-02-21 20:10:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:10:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:10:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:10:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:10:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:10:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2021-02-21 20:10:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:10:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:10:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:10:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-21 20:10:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:10:18,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:10:18,279 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-02-21 20:10:18,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:18 BoogieIcfgContainer [2021-02-21 20:10:18,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:10:18,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:10:18,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:10:18,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:10:18,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:10:16" (1/3) ... [2021-02-21 20:10:18,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b90cc0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:18, skipping insertion in model container [2021-02-21 20:10:18,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:17" (2/3) ... [2021-02-21 20:10:18,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b90cc0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:18, skipping insertion in model container [2021-02-21 20:10:18,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:18" (3/3) ... [2021-02-21 20:10:18,291 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2021-02-21 20:10:18,299 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:10:18,305 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:10:18,323 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:10:18,349 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:10:18,350 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:10:18,350 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:10:18,350 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:10:18,350 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:10:18,350 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:10:18,350 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:10:18,351 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:10:18,372 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states. [2021-02-21 20:10:18,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-21 20:10:18,385 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:18,386 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] [2021-02-21 20:10:18,386 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:18,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:18,394 INFO L82 PathProgramCache]: Analyzing trace with hash 2046356497, now seen corresponding path program 1 times [2021-02-21 20:10:18,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:18,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062057464] [2021-02-21 20:10:18,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:18,480 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:18,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:18,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 20:10:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:18,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 20:10:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:18,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:10:18,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062057464] [2021-02-21 20:10:18,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:10:18,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:10:18,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453559704] [2021-02-21 20:10:18,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:10:18,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:10:18,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:10:18,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:10:18,962 INFO L87 Difference]: Start difference. First operand 205 states. Second operand 4 states. [2021-02-21 20:10:19,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:10:19,764 INFO L93 Difference]: Finished difference Result 387 states and 476 transitions. [2021-02-21 20:10:19,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:10:19,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2021-02-21 20:10:19,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:10:19,779 INFO L225 Difference]: With dead ends: 387 [2021-02-21 20:10:19,780 INFO L226 Difference]: Without dead ends: 198 [2021-02-21 20:10:19,786 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 [2021-02-21 20:10:19,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-02-21 20:10:19,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-02-21 20:10:19,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2021-02-21 20:10:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 224 transitions. [2021-02-21 20:10:19,867 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 224 transitions. Word has length 56 [2021-02-21 20:10:19,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:10:19,868 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 224 transitions. [2021-02-21 20:10:19,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:10:19,869 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 224 transitions. [2021-02-21 20:10:19,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-21 20:10:19,877 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:19,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:10:19,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:10:19,879 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:19,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:19,882 INFO L82 PathProgramCache]: Analyzing trace with hash -622845468, now seen corresponding path program 1 times [2021-02-21 20:10:19,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:19,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096818655] [2021-02-21 20:10:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:19,889 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:20,078 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:20,189 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:20,291 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:10:20,291 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:10:20,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:10:20,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:10:20 BoogieIcfgContainer [2021-02-21 20:10:20,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:10:20,318 INFO L168 Benchmark]: Toolchain (without parser) took 3403.52 ms. Allocated memory was 169.9 MB in the beginning and 207.6 MB in the end (delta: 37.7 MB). Free memory was 146.0 MB in the beginning and 184.9 MB in the end (delta: -38.9 MB). Peak memory consumption was 83.7 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:20,318 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 169.9 MB. Free memory is still 144.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:10:20,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.95 ms. Allocated memory is still 169.9 MB. Free memory was 144.9 MB in the beginning and 131.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:20,321 INFO L168 Benchmark]: Boogie Preprocessor took 64.26 ms. Allocated memory is still 169.9 MB. Free memory was 131.7 MB in the beginning and 129.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:20,322 INFO L168 Benchmark]: RCFGBuilder took 930.06 ms. Allocated memory is still 169.9 MB. Free memory was 129.4 MB in the beginning and 117.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:20,323 INFO L168 Benchmark]: TraceAbstraction took 2031.46 ms. Allocated memory was 169.9 MB in the beginning and 207.6 MB in the end (delta: 37.7 MB). Free memory was 116.8 MB in the beginning and 185.4 MB in the end (delta: -68.5 MB). Peak memory consumption was 54.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:20,327 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 169.9 MB. Free memory is still 144.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 358.95 ms. Allocated memory is still 169.9 MB. Free memory was 144.9 MB in the beginning and 131.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.26 ms. Allocated memory is still 169.9 MB. Free memory was 131.7 MB in the beginning and 129.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 930.06 ms. Allocated memory is still 169.9 MB. Free memory was 129.4 MB in the beginning and 117.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2031.46 ms. Allocated memory was 169.9 MB in the beginning and 207.6 MB in the end (delta: 37.7 MB). Free memory was 116.8 MB in the beginning and 185.4 MB in the end (delta: -68.5 MB). Peak memory consumption was 54.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 188]: 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 43, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 187, overapproximation of bitwiseXor at line 39. Possible FailurePath: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L182] CALL isfinite_double(x) [L163] __int32_t hx; [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L182] RET isfinite_double(x) [L182] COND TRUE isfinite_double(x) [L184] CALL, EXPR fmod_double(x, y) [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); [L184] RET, EXPR fmod_double(x, y) [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x [L188] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 208 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 228 SDtfs, 37 SDslu, 175 SDs, 0 SdLazy, 245 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s 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=205occurred 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...