/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_1251b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:55:41,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:55:41,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:55:41,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 03:55:41,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:55:41,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:55:41,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:55:41,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:55:41,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:55:41,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:55:41,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:55:41,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:55:41,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:55:41,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:55:41,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:55:41,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:55:41,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 03:55:41,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:55:41,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:55:41,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:55:41,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:55:41,289 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:55:41,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:55:41,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:55:41,291 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:55:41,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:55:41,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:55:41,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:55:41,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:55:41,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:55:41,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:55:41,293 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:55:41,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:55:41,293 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:55:41,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:55:41,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:55:41,294 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:55:41,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:55:41,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:55:41,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:55:41,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:55:41,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:55:41,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:55:41,295 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:55:41,295 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:55:41,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:55:41,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:55:41,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:55:41,666 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:55:41,666 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:55:41,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2021-02-24 03:55:41,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8ac8d87/c88a1e49a54e4b1a90a341e7767cc117/FLAGd3f44bc36 [2021-02-24 03:55:42,399 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:55:42,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2021-02-24 03:55:42,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8ac8d87/c88a1e49a54e4b1a90a341e7767cc117/FLAGd3f44bc36 [2021-02-24 03:55:42,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8ac8d87/c88a1e49a54e4b1a90a341e7767cc117 [2021-02-24 03:55:42,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:55:42,777 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:55:42,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:42,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:55:42,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:55:42,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:42" (1/1) ... [2021-02-24 03:55:42,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f8c8881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:42, skipping insertion in model container [2021-02-24 03:55:42,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:42" (1/1) ... [2021-02-24 03:55:42,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:55:42,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:55:43,067 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_1251b.c[2080,2093] [2021-02-24 03:55:43,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:43,079 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:55:43,106 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_1251b.c[2080,2093] [2021-02-24 03:55:43,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:43,125 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:55:43,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43 WrapperNode [2021-02-24 03:55:43,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:43,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:55:43,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:55:43,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:55:43,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (1/1) ... [2021-02-24 03:55:43,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (1/1) ... [2021-02-24 03:55:43,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (1/1) ... [2021-02-24 03:55:43,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (1/1) ... [2021-02-24 03:55:43,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (1/1) ... [2021-02-24 03:55:43,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (1/1) ... [2021-02-24 03:55:43,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (1/1) ... [2021-02-24 03:55:43,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:55:43,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:55:43,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:55:43,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:55:43,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (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 [2021-02-24 03:55:43,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:55:43,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:55:43,275 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:55:43,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-24 03:55:43,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-24 03:55:43,275 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2021-02-24 03:55:43,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:55:43,276 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:55:43,276 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:55:43,276 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:55:43,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:55:43,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-24 03:55:43,277 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-24 03:55:43,277 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-24 03:55:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-24 03:55:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:55:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:55:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2021-02-24 03:55:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:55:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:55:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:55:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:55:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:55:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-24 03:55:43,778 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:55:43,778 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 03:55:43,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:43 BoogieIcfgContainer [2021-02-24 03:55:43,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:55:43,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:55:43,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:55:43,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:55:43,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:55:42" (1/3) ... [2021-02-24 03:55:43,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575bcc82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:43, skipping insertion in model container [2021-02-24 03:55:43,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:43" (2/3) ... [2021-02-24 03:55:43,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575bcc82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:43, skipping insertion in model container [2021-02-24 03:55:43,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:43" (3/3) ... [2021-02-24 03:55:43,789 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2021-02-24 03:55:43,796 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:55:43,801 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:55:43,819 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:55:43,846 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:55:43,847 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:55:43,847 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:55:43,847 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:55:43,847 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:55:43,847 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:55:43,847 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:55:43,848 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:55:43,864 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2021-02-24 03:55:43,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-24 03:55:43,875 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:43,875 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] [2021-02-24 03:55:43,876 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:43,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:43,882 INFO L82 PathProgramCache]: Analyzing trace with hash -556937658, now seen corresponding path program 1 times [2021-02-24 03:55:43,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:43,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748181486] [2021-02-24 03:55:43,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:43,984 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:44,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:44,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:44,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:44,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:44,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:55:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:44,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:44,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:44,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 03:55:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:44,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:44,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:44,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-24 03:55:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:44,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:44,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:44,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:44,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:44,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:55:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:44,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:44,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:44,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:44,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:55:44,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748181486] [2021-02-24 03:55:44,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:55:44,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:55:44,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178438440] [2021-02-24 03:55:44,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:55:44,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:55:44,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:55:44,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:55:44,463 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 4 states. [2021-02-24 03:55:44,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:55:44,931 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2021-02-24 03:55:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 03:55:44,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2021-02-24 03:55:44,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:55:44,944 INFO L225 Difference]: With dead ends: 138 [2021-02-24 03:55:44,944 INFO L226 Difference]: Without dead ends: 75 [2021-02-24 03:55:44,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:55:44,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-02-24 03:55:45,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-02-24 03:55:45,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-02-24 03:55:45,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2021-02-24 03:55:45,008 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 45 [2021-02-24 03:55:45,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:55:45,009 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2021-02-24 03:55:45,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:55:45,009 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2021-02-24 03:55:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-02-24 03:55:45,012 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:45,012 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] [2021-02-24 03:55:45,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:55:45,013 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:45,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:45,014 INFO L82 PathProgramCache]: Analyzing trace with hash 155875998, now seen corresponding path program 1 times [2021-02-24 03:55:45,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:45,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509137118] [2021-02-24 03:55:45,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:45,018 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:45,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:55:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:45,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 03:55:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:45,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-24 03:55:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:45,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:55:45,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:55:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:45,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:55:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:55:45,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509137118] [2021-02-24 03:55:45,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:55:45,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 03:55:45,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561778734] [2021-02-24 03:55:45,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 03:55:45,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:55:45,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 03:55:45,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 03:55:45,295 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand 6 states. [2021-02-24 03:55:45,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:55:45,603 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2021-02-24 03:55:45,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 03:55:45,604 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2021-02-24 03:55:45,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:55:45,608 INFO L225 Difference]: With dead ends: 89 [2021-02-24 03:55:45,608 INFO L226 Difference]: Without dead ends: 80 [2021-02-24 03:55:45,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:55:45,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-02-24 03:55:45,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2021-02-24 03:55:45,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-24 03:55:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2021-02-24 03:55:45,627 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 55 [2021-02-24 03:55:45,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:55:45,628 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2021-02-24 03:55:45,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 03:55:45,628 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2021-02-24 03:55:45,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-24 03:55:45,630 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:45,631 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] [2021-02-24 03:55:45,631 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:55:45,631 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:45,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:45,632 INFO L82 PathProgramCache]: Analyzing trace with hash 315972927, now seen corresponding path program 1 times [2021-02-24 03:55:45,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:45,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253888685] [2021-02-24 03:55:45,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:45,635 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:45,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:55:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:45,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 03:55:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:45,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-24 03:55:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:45,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:55:45,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:55:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:45,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:45,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:45,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:55:45,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:55:45,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253888685] [2021-02-24 03:55:45,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:55:45,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 03:55:45,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881935139] [2021-02-24 03:55:45,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 03:55:45,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:55:45,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 03:55:45,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 03:55:45,839 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 6 states. [2021-02-24 03:55:46,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:55:46,138 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2021-02-24 03:55:46,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 03:55:46,139 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2021-02-24 03:55:46,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:55:46,141 INFO L225 Difference]: With dead ends: 93 [2021-02-24 03:55:46,141 INFO L226 Difference]: Without dead ends: 84 [2021-02-24 03:55:46,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:55:46,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-02-24 03:55:46,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2021-02-24 03:55:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-24 03:55:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2021-02-24 03:55:46,156 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 58 [2021-02-24 03:55:46,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:55:46,156 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2021-02-24 03:55:46,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 03:55:46,156 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2021-02-24 03:55:46,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-24 03:55:46,158 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:46,159 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] [2021-02-24 03:55:46,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:55:46,159 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:46,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:46,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1281950337, now seen corresponding path program 1 times [2021-02-24 03:55:46,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:46,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190678172] [2021-02-24 03:55:46,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:46,162 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:55:46,185 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:55:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:55:46,210 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:55:46,247 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:55:46,247 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:55:46,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:55:46,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:55:46 BoogieIcfgContainer [2021-02-24 03:55:46,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:55:46,266 INFO L168 Benchmark]: Toolchain (without parser) took 3501.33 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.8 MB in the beginning and 115.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:46,267 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:55:46,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 114.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:46,268 INFO L168 Benchmark]: Boogie Preprocessor took 51.31 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 112.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:46,269 INFO L168 Benchmark]: RCFGBuilder took 601.96 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 126.2 MB in the end (delta: -13.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:46,270 INFO L168 Benchmark]: TraceAbstraction took 2482.17 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.7 MB in the beginning and 115.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 40.9 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:46,273 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 345.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 114.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.31 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 112.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 601.96 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 126.2 MB in the end (delta: -13.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2482.17 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.7 MB in the beginning and 115.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 40.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L66] double x = __VERIFIER_nondet_double(); [L67] double y = 0.0 / 0.0; [L74] CALL, EXPR isnan_double(x) [L18] return x != x; [L74] RET, EXPR isnan_double(x) [L74] COND TRUE !isnan_double(x) [L76] CALL, EXPR fmax_double(x, y) [L57] CALL, EXPR __fpclassify_double(x) [L29] __uint32_t msw, lsw; [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; [L57] RET, EXPR __fpclassify_double(x) [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; [L76] RET, EXPR fmax_double(x, y) [L76] double res = fmax_double(x, y); [L79] COND TRUE res != x [L80] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 246 SDtfs, 97 SDslu, 393 SDs, 0 SdLazy, 337 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred 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, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 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...