/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_1092c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:31:23,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:31:23,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:31:23,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:31:23,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:31:23,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:31:23,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:31:23,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:31:23,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:31:23,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:31:23,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:31:23,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:31:23,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:31:23,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:31:23,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:31:23,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:31:23,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:31:23,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:31:23,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:31:23,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:31:23,355 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 01:31:23,374 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:31:23,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:31:23,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:31:23,376 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:31:23,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:31:23,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:31:23,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:31:23,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:31:23,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:31:23,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:31:23,378 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:31:23,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:31:23,378 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:31:23,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:31:23,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:31:23,379 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:31:23,379 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:31:23,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:31:23,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:31:23,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:31:23,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:31:23,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:31:23,380 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:31:23,381 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:31:23,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:31:23,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:31:23,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:31:23,762 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:31:23,762 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:31:23,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092c.c [2021-02-22 01:31:23,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ac17a0eb/c2609c89c5104a4784aeefc753852379/FLAGe18c75d63 [2021-02-22 01:31:24,525 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:31:24,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1092c.c [2021-02-22 01:31:24,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ac17a0eb/c2609c89c5104a4784aeefc753852379/FLAGe18c75d63 [2021-02-22 01:31:24,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ac17a0eb/c2609c89c5104a4784aeefc753852379 [2021-02-22 01:31:24,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:31:24,846 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:31:24,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:24,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:31:24,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:31:24,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:24" (1/1) ... [2021-02-22 01:31:24,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d83caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:24, skipping insertion in model container [2021-02-22 01:31:24,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:24" (1/1) ... [2021-02-22 01:31:24,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:31:24,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:31:25,109 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_1092c.c[2414,2427] [2021-02-22 01:31:25,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:25,133 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:31:25,208 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_1092c.c[2414,2427] [2021-02-22 01:31:25,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:25,227 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:31:25,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25 WrapperNode [2021-02-22 01:31:25,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:25,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:31:25,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:31:25,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:31:25,244 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 01:31:25,245 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 01:31:25,255 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 01:31:25,255 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 01:31:25,268 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 01:31:25,276 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 01:31:25,278 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 01:31:25,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:31:25,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:31:25,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:31:25,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:31:25,284 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 01:31:25,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:31:25,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:31:25,383 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:31:25,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2021-02-22 01:31:25,383 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2021-02-22 01:31:25,383 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:31:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:31:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:31:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:31:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:31:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2021-02-22 01:31:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-22 01:31:25,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:31:25,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:31:25,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:31:25,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-22 01:31:25,391 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2021-02-22 01:31:25,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:31:25,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:31:25,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:31:25,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:31:25,989 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:31:25,989 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-22 01:31:25,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:25 BoogieIcfgContainer [2021-02-22 01:31:25,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:31:25,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:31:25,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:31:25,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:31:25,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:31:24" (1/3) ... [2021-02-22 01:31:25,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540ba747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:25, skipping insertion in model container [2021-02-22 01:31:25,999 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 01:31:26,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540ba747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:25, skipping insertion in model container [2021-02-22 01:31:26,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:25" (3/3) ... [2021-02-22 01:31:26,002 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092c.c [2021-02-22 01:31:26,011 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:31:26,016 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:31:26,038 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:31:26,082 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:31:26,083 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:31:26,083 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:31:26,083 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:31:26,083 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:31:26,083 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:31:26,084 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:31:26,084 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:31:26,115 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states. [2021-02-22 01:31:26,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-22 01:31:26,139 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:26,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:31:26,141 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:26,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:26,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1654117377, now seen corresponding path program 1 times [2021-02-22 01:31:26,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:26,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398058899] [2021-02-22 01:31:26,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:26,262 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:26,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:26,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:26,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:26,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:26,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:31:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:26,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:26,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:26,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:31:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:26,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:26,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:26,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:26,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:26,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-22 01:31:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:26,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:26,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:26,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:26,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:26,682 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 01:31:26,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398058899] [2021-02-22 01:31:26,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:31:26,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:31:26,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104408945] [2021-02-22 01:31:26,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:31:26,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:31:26,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:31:26,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:31:26,726 INFO L87 Difference]: Start difference. First operand 113 states. Second operand 4 states. [2021-02-22 01:31:27,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:31:27,153 INFO L93 Difference]: Finished difference Result 204 states and 247 transitions. [2021-02-22 01:31:27,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:31:27,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2021-02-22 01:31:27,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:31:27,166 INFO L225 Difference]: With dead ends: 204 [2021-02-22 01:31:27,166 INFO L226 Difference]: Without dead ends: 106 [2021-02-22 01:31:27,171 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 [2021-02-22 01:31:27,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-22 01:31:27,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-02-22 01:31:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-02-22 01:31:27,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2021-02-22 01:31:27,230 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 46 [2021-02-22 01:31:27,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:31:27,231 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2021-02-22 01:31:27,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:31:27,231 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2021-02-22 01:31:27,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-22 01:31:27,234 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:27,235 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] [2021-02-22 01:31:27,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:31:27,235 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:27,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:27,236 INFO L82 PathProgramCache]: Analyzing trace with hash 698900399, now seen corresponding path program 1 times [2021-02-22 01:31:27,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:27,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129447359] [2021-02-22 01:31:27,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:27,239 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:27,382 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:27,502 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:27,571 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:31:27,572 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:31:27,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:31:27,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:31:27 BoogieIcfgContainer [2021-02-22 01:31:27,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:31:27,606 INFO L168 Benchmark]: Toolchain (without parser) took 2770.23 ms. Allocated memory is still 151.0 MB. Free memory was 128.2 MB in the beginning and 84.1 MB in the end (delta: 44.1 MB). Peak memory consumption was 45.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:27,608 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:31:27,610 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.94 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 116.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:27,611 INFO L168 Benchmark]: Boogie Preprocessor took 52.31 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:27,612 INFO L168 Benchmark]: RCFGBuilder took 709.07 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 117.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:27,613 INFO L168 Benchmark]: TraceAbstraction took 1609.00 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 84.1 MB in the end (delta: 33.2 MB). Peak memory consumption was 34.8 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:27,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 378.94 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 116.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.31 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 709.07 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 117.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1609.00 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 84.1 MB in the end (delta: 33.2 MB). Peak memory consumption was 34.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 109]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 94, overapproximation of someBinaryArithmeticDOUBLEoperation at line 52, overapproximation of bitwiseAnd at line 91. Possible FailurePath: [L16] static const double huge_ceil = 1.0e300; [L105] double x = 1.0 / 0.0; [L106] CALL, EXPR ceil_double(x) [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L28] COND FALSE !(j0 < 20) [L50] COND TRUE j0 > 51 [L51] COND TRUE j0 == 0x400 [L52] return x + x; [L106] RET, EXPR ceil_double(x) [L106] double res = ceil_double(x); [L108] CALL, EXPR isinf_double(res) [L84] __int32_t hx, lx; [L86] ieee_double_shape_type ew_u; [L87] ew_u.value = (x) [L88] EXPR ew_u.parts.msw [L88] (hx) = ew_u.parts.msw [L89] EXPR ew_u.parts.lsw [L89] (lx) = ew_u.parts.lsw [L91] hx &= 0x7fffffff [L92] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L93] hx = 0x7ff00000 - hx [L94] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L108] RET, EXPR isinf_double(res) [L108] COND TRUE !isinf_double(res) [L109] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 116 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 21 SDslu, 92 SDs, 0 SdLazy, 134 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=113occurred 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...