/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_1092d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:10:48,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:10:48,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:10:48,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:10:48,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:10:48,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:10:48,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:10:48,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:10:48,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:10:48,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:10:48,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:10:48,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:10:48,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:10:48,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:10:48,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:10:48,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:10:48,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:10:48,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:10:48,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:10:48,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:10:48,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:10:48,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:10:48,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:10:48,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:10:48,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:10:48,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:10:48,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:10:48,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:10:48,637 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 20:10:48,650 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:10:48,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:10:48,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:10:48,652 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:10:48,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:10:48,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:10:48,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:10:48,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:10:48,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:10:48,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:10:48,654 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:10:48,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:10:48,654 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:10:48,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:10:48,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:10:48,655 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:10:48,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:10:48,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:10:48,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:48,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:10:48,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:10:48,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:10:48,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:10:49,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:10:49,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:10:49,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:10:49,070 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:10:49,072 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:10:49,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092d.c [2021-02-21 20:10:49,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b62198f7f/d904a0f15a7d4b558f635d2da5afaa54/FLAG5a43c0809 [2021-02-21 20:10:49,744 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:10:49,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1092d.c [2021-02-21 20:10:49,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b62198f7f/d904a0f15a7d4b558f635d2da5afaa54/FLAG5a43c0809 [2021-02-21 20:10:50,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b62198f7f/d904a0f15a7d4b558f635d2da5afaa54 [2021-02-21 20:10:50,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:10:50,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:10:50,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:50,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:10:50,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:10:50,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@563ae641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50, skipping insertion in model container [2021-02-21 20:10:50,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:10:50,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:10:50,271 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_1092d.c[1790,1803] [2021-02-21 20:10:50,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:50,285 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:10:50,315 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_1092d.c[1790,1803] [2021-02-21 20:10:50,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:50,334 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:10:50,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50 WrapperNode [2021-02-21 20:10:50,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:50,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:10:50,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:10:50,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:10:50,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:10:50,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:10:50,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:10:50,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:10:50,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (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 20:10:50,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:10:50,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:10:50,533 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:10:50,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2021-02-21 20:10:50,533 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2021-02-21 20:10:50,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:10:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:10:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:10:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:10:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:10:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2021-02-21 20:10:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:10:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:10:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:10:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:10:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:10:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2021-02-21 20:10:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:10:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:10:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:10:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:10:51,169 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:10:51,169 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-21 20:10:51,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:51 BoogieIcfgContainer [2021-02-21 20:10:51,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:10:51,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:10:51,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:10:51,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:10:51,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:10:50" (1/3) ... [2021-02-21 20:10:51,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2238ca91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:51, skipping insertion in model container [2021-02-21 20:10:51,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (2/3) ... [2021-02-21 20:10:51,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2238ca91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:51, skipping insertion in model container [2021-02-21 20:10:51,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:51" (3/3) ... [2021-02-21 20:10:51,182 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092d.c [2021-02-21 20:10:51,189 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:10:51,195 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:10:51,221 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:10:51,247 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:10:51,248 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:10:51,248 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:10:51,248 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:10:51,248 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:10:51,248 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:10:51,249 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:10:51,249 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:10:51,268 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2021-02-21 20:10:51,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-21 20:10:51,282 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:51,283 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] [2021-02-21 20:10:51,284 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:51,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:51,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1860598410, now seen corresponding path program 1 times [2021-02-21 20:10:51,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:51,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520128086] [2021-02-21 20:10:51,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:51,392 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:51,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:51,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:51,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:51,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:51,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:51,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:51,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:51,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:10:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:51,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:51,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:51,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:51,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:51,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 20:10:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:51,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:51,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:51,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:51,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:51,777 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 20:10:51,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520128086] [2021-02-21 20:10:51,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:10:51,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:10:51,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645580981] [2021-02-21 20:10:51,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:10:51,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:10:51,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:10:51,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:10:51,828 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 4 states. [2021-02-21 20:10:52,017 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-02-21 20:10:52,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:10:52,487 INFO L93 Difference]: Finished difference Result 153 states and 184 transitions. [2021-02-21 20:10:52,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:10:52,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2021-02-21 20:10:52,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:10:52,500 INFO L225 Difference]: With dead ends: 153 [2021-02-21 20:10:52,500 INFO L226 Difference]: Without dead ends: 80 [2021-02-21 20:10:52,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:10:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-02-21 20:10:52,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-02-21 20:10:52,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-02-21 20:10:52,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2021-02-21 20:10:52,565 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 42 [2021-02-21 20:10:52,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:10:52,565 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2021-02-21 20:10:52,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:10:52,566 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2021-02-21 20:10:52,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-21 20:10:52,568 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:52,569 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 20:10:52,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:10:52,569 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:52,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:52,570 INFO L82 PathProgramCache]: Analyzing trace with hash -301483240, now seen corresponding path program 1 times [2021-02-21 20:10:52,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:52,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968722250] [2021-02-21 20:10:52,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:52,574 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:52,651 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:52,773 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:52,813 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:10:52,813 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:10:52,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:10:52,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:10:52 BoogieIcfgContainer [2021-02-21 20:10:52,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:10:52,835 INFO L168 Benchmark]: Toolchain (without parser) took 2788.73 ms. Allocated memory is still 151.0 MB. Free memory was 134.0 MB in the beginning and 89.4 MB in the end (delta: 44.6 MB). Peak memory consumption was 43.8 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:52,836 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:10:52,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.87 ms. Allocated memory is still 151.0 MB. Free memory was 132.9 MB in the beginning and 122.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:52,838 INFO L168 Benchmark]: Boogie Preprocessor took 49.09 ms. Allocated memory is still 151.0 MB. Free memory was 122.4 MB in the beginning and 120.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:52,839 INFO L168 Benchmark]: RCFGBuilder took 785.28 ms. Allocated memory is still 151.0 MB. Free memory was 120.7 MB in the beginning and 112.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:52,840 INFO L168 Benchmark]: TraceAbstraction took 1659.88 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 89.4 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:52,843 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 276.87 ms. Allocated memory is still 151.0 MB. Free memory was 132.9 MB in the beginning and 122.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.09 ms. Allocated memory is still 151.0 MB. Free memory was 122.4 MB in the beginning and 120.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 785.28 ms. Allocated memory is still 151.0 MB. Free memory was 120.7 MB in the beginning and 112.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1659.88 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 89.4 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 83]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 78, overapproximation of bitwiseAnd at line 66. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; [L78] float x = -1.0f / 0.0f; [L79] CALL, EXPR ceil_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 FALSE !(!((ix) < 0x7f800000L)) [L48] return x; [L79] RET, EXPR ceil_float(x) [L79] float res = ceil_float(x); [L82] CALL, EXPR isinf_float(res) [L60] __int32_t ix; [L62] ieee_float_shape_type gf_u; [L63] gf_u.value = (x) [L64] EXPR gf_u.word [L64] (ix) = gf_u.word [L66] ix &= 0x7fffffff [L67] return ((ix) == 0x7f800000L); [L82] RET, EXPR isinf_float(res) [L82] COND TRUE !isinf_float(res) [L83] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 91 SDtfs, 17 SDslu, 65 SDs, 0 SdLazy, 101 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred 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...