/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:37:27,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:37:27,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:37:27,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 17:37:27,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 17:37:27,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 17:37:27,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 17:37:27,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 17:37:27,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 17:37:27,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 17:37:27,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 17:37:27,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 17:37:27,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:37:27,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:37:27,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:37:27,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:37:27,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:37:27,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:37:27,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:37:27,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:37:27,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:37:27,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:37:27,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:37:27,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:37:27,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:37:27,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:37:27,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:37:27,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:37:27,228 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:37:27,240 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:37:27,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:37:27,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:37:27,243 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:37:27,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:37:27,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:37:27,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:37:27,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:37:27,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:37:27,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:37:27,245 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:37:27,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:37:27,246 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:37:27,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:37:27,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:37:27,247 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:37:27,247 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:37:27,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:37:27,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:37:27,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:37:27,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:37:27,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:37:27,249 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:37:27,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:37:27,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:37:27,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:37:27,714 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:37:27,715 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:37:27,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2021-02-23 17:37:27,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b844da1f/7be85b09d3cf4eef9ba46afc0d790d6b/FLAG45b19a596 [2021-02-23 17:37:28,459 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:37:28,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2021-02-23 17:37:28,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b844da1f/7be85b09d3cf4eef9ba46afc0d790d6b/FLAG45b19a596 [2021-02-23 17:37:28,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b844da1f/7be85b09d3cf4eef9ba46afc0d790d6b [2021-02-23 17:37:28,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:37:28,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:37:28,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:28,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:37:28,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:37:28,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:28" (1/1) ... [2021-02-23 17:37:28,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d9d881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:28, skipping insertion in model container [2021-02-23 17:37:28,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:28" (1/1) ... [2021-02-23 17:37:28,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:37:28,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:37:29,148 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_1231b.c[1765,1778] [2021-02-23 17:37:29,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:29,174 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:37:29,204 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_1231b.c[1765,1778] [2021-02-23 17:37:29,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:29,224 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:37:29,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:29 WrapperNode [2021-02-23 17:37:29,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:29,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:37:29,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:37:29,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:37:29,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:29" (1/1) ... [2021-02-23 17:37:29,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:29" (1/1) ... [2021-02-23 17:37:29,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:29" (1/1) ... [2021-02-23 17:37:29,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:29" (1/1) ... [2021-02-23 17:37:29,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:29" (1/1) ... [2021-02-23 17:37:29,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:29" (1/1) ... [2021-02-23 17:37:29,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:29" (1/1) ... [2021-02-23 17:37:29,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:37:29,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:37:29,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:37:29,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:37:29,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:29" (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 [2021-02-23 17:37:29,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:37:29,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:37:29,408 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:37:29,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 17:37:29,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-23 17:37:29,409 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2021-02-23 17:37:29,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:37:29,409 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:37:29,410 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:37:29,410 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:37:29,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:37:29,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-23 17:37:29,412 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 17:37:29,412 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-23 17:37:29,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 17:37:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:37:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:37:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2021-02-23 17:37:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:37:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:37:29,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:37:29,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:37:29,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:37:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 17:37:29,904 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:37:29,905 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 17:37:29,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:29 BoogieIcfgContainer [2021-02-23 17:37:29,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:37:29,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:37:29,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:37:29,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:37:29,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:37:28" (1/3) ... [2021-02-23 17:37:29,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e315e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:29, skipping insertion in model container [2021-02-23 17:37:29,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:29" (2/3) ... [2021-02-23 17:37:29,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e315e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:29, skipping insertion in model container [2021-02-23 17:37:29,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:29" (3/3) ... [2021-02-23 17:37:29,919 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2021-02-23 17:37:29,934 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:37:29,939 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:37:29,958 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:37:29,985 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:37:29,985 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:37:29,986 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:37:29,986 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:37:29,986 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:37:29,986 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:37:29,986 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:37:29,986 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:37:30,005 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2021-02-23 17:37:30,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-23 17:37:30,016 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:30,017 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] [2021-02-23 17:37:30,018 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:30,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1066152697, now seen corresponding path program 1 times [2021-02-23 17:37:30,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:30,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103067119] [2021-02-23 17:37:30,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:30,114 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:30,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:30,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:30,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:30,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:30,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:37:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:30,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:30,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:30,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 17:37:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:30,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:30,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:30,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 17:37:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:30,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:30,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:30,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:30,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:30,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:37:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:30,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:30,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:30,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:30,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:37:30,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103067119] [2021-02-23 17:37:30,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:37:30,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:37:30,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699043942] [2021-02-23 17:37:30,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:37:30,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:37:30,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:37:30,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:37:30,506 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 4 states. [2021-02-23 17:37:30,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:37:30,829 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2021-02-23 17:37:30,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:37:30,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2021-02-23 17:37:30,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:37:30,841 INFO L225 Difference]: With dead ends: 138 [2021-02-23 17:37:30,842 INFO L226 Difference]: Without dead ends: 75 [2021-02-23 17:37:30,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:37:30,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-02-23 17:37:30,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-02-23 17:37:30,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-02-23 17:37:30,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2021-02-23 17:37:30,904 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 45 [2021-02-23 17:37:30,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:37:30,904 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2021-02-23 17:37:30,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:37:30,905 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2021-02-23 17:37:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-02-23 17:37:30,908 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:30,908 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] [2021-02-23 17:37:30,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:37:30,909 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:30,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:30,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1670016673, now seen corresponding path program 1 times [2021-02-23 17:37:30,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:30,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852239385] [2021-02-23 17:37:30,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:30,914 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:31,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:31,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:31,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:37:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:31,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:31,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 17:37:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:31,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:31,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 17:37:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:31,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:31,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:37:31,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:31,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:37:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:31,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:31,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:37:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:37:31,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852239385] [2021-02-23 17:37:31,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:37:31,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 17:37:31,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718092619] [2021-02-23 17:37:31,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 17:37:31,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:37:31,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 17:37:31,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 17:37:31,148 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand 6 states. [2021-02-23 17:37:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:37:31,399 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2021-02-23 17:37:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 17:37:31,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2021-02-23 17:37:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:37:31,404 INFO L225 Difference]: With dead ends: 89 [2021-02-23 17:37:31,404 INFO L226 Difference]: Without dead ends: 80 [2021-02-23 17:37:31,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:37:31,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-02-23 17:37:31,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2021-02-23 17:37:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-23 17:37:31,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2021-02-23 17:37:31,423 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 55 [2021-02-23 17:37:31,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:37:31,424 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2021-02-23 17:37:31,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 17:37:31,424 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2021-02-23 17:37:31,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-23 17:37:31,426 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:31,426 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] [2021-02-23 17:37:31,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:37:31,427 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:31,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:31,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1013353920, now seen corresponding path program 1 times [2021-02-23 17:37:31,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:31,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814705726] [2021-02-23 17:37:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:31,431 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:31,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:31,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:31,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:37:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:31,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:31,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 17:37:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:31,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:31,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 17:37:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:31,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:31,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:37:31,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:31,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:37:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:31,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:31,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:31,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:37:31,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:37:31,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814705726] [2021-02-23 17:37:31,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:37:31,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 17:37:31,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652253929] [2021-02-23 17:37:31,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 17:37:31,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:37:31,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 17:37:31,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 17:37:31,605 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 6 states. [2021-02-23 17:37:31,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:37:31,857 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2021-02-23 17:37:31,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 17:37:31,857 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2021-02-23 17:37:31,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:37:31,860 INFO L225 Difference]: With dead ends: 93 [2021-02-23 17:37:31,860 INFO L226 Difference]: Without dead ends: 84 [2021-02-23 17:37:31,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:37:31,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-02-23 17:37:31,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2021-02-23 17:37:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-23 17:37:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2021-02-23 17:37:31,876 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 58 [2021-02-23 17:37:31,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:37:31,876 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2021-02-23 17:37:31,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 17:37:31,877 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2021-02-23 17:37:31,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-23 17:37:31,879 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:31,879 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] [2021-02-23 17:37:31,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:37:31,879 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:31,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:31,880 INFO L82 PathProgramCache]: Analyzing trace with hash -584569344, now seen corresponding path program 1 times [2021-02-23 17:37:31,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:31,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911311093] [2021-02-23 17:37:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:31,883 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:31,910 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:31,933 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:31,979 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:37:31,980 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:37:31,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:37:32,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:37:32 BoogieIcfgContainer [2021-02-23 17:37:32,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:37:32,008 INFO L168 Benchmark]: Toolchain (without parser) took 3184.54 ms. Allocated memory was 162.5 MB in the beginning and 196.1 MB in the end (delta: 33.6 MB). Free memory was 138.5 MB in the beginning and 134.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 38.2 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:32,013 INFO L168 Benchmark]: CDTParser took 0.90 ms. Allocated memory is still 162.5 MB. Free memory was 135.8 MB in the beginning and 135.7 MB in the end (delta: 139.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:37:32,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.13 ms. Allocated memory is still 162.5 MB. Free memory was 137.5 MB in the beginning and 127.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:32,016 INFO L168 Benchmark]: Boogie Preprocessor took 56.46 ms. Allocated memory is still 162.5 MB. Free memory was 127.2 MB in the beginning and 125.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:32,020 INFO L168 Benchmark]: RCFGBuilder took 624.14 ms. Allocated memory is still 162.5 MB. Free memory was 125.4 MB in the beginning and 136.2 MB in the end (delta: -10.9 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:32,025 INFO L168 Benchmark]: TraceAbstraction took 2096.45 ms. Allocated memory was 162.5 MB in the beginning and 196.1 MB in the end (delta: 33.6 MB). Free memory was 135.7 MB in the beginning and 134.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 35.2 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:32,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90 ms. Allocated memory is still 162.5 MB. Free memory was 135.8 MB in the beginning and 135.7 MB in the end (delta: 139.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 382.13 ms. Allocated memory is still 162.5 MB. Free memory was 137.5 MB in the beginning and 127.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.46 ms. Allocated memory is still 162.5 MB. Free memory was 127.2 MB in the beginning and 125.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 624.14 ms. Allocated memory is still 162.5 MB. Free memory was 125.4 MB in the beginning and 136.2 MB in the end (delta: -10.9 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2096.45 ms. Allocated memory was 162.5 MB in the beginning and 196.1 MB in the end (delta: 33.6 MB). Free memory was 135.7 MB in the beginning and 134.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 35.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: 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 69, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L62] double x = __VERIFIER_nondet_double(); [L63] double y = 0.0 / 0.0; [L64] CALL, EXPR isnan_double(x) [L18] return x != x; [L64] RET, EXPR isnan_double(x) [L64] COND TRUE !isnan_double(x) [L66] CALL, EXPR fmin_double(x, y) [L47] CALL, EXPR __fpclassify_double(x) [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] RET, EXPR __fpclassify_double(x) [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L66] RET, EXPR fmin_double(x, y) [L66] double res = fmin_double(x, y); [L69] COND TRUE res != x [L70] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, 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, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s 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...