/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:12:51,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:12:51,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:12:51,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:12:51,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:12:51,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:12:51,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:12:51,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:12:51,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:12:51,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:12:51,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:12:51,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:12:51,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:12:51,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:12:51,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:12:51,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:12:51,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:12:51,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:12:51,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:12:51,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:12:51,297 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 13:12:51,325 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:12:51,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:12:51,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:12:51,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:12:51,327 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:12:51,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:12:51,328 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:12:51,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:12:51,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:12:51,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:12:51,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:12:51,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:12:51,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:12:51,329 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:12:51,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:12:51,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:12:51,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:12:51,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:12:51,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:12:51,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:12:51,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:12:51,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:12:51,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:12:51,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:12:51,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:12:51,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:12:51,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:12:51,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:12:51,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:12:51,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:12:51,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:12:51,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:12:51,799 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:12:51,799 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:12:51,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2021-02-23 13:12:51,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f27913681/c9325e2dbe53402a9da960f170c69156/FLAGf0c50b89c [2021-02-23 13:12:52,598 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:12:52,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2021-02-23 13:12:52,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f27913681/c9325e2dbe53402a9da960f170c69156/FLAGf0c50b89c [2021-02-23 13:12:52,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f27913681/c9325e2dbe53402a9da960f170c69156 [2021-02-23 13:12:52,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:12:52,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:12:52,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:12:52,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:12:52,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:12:52,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4d2a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52, skipping insertion in model container [2021-02-23 13:12:52,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:12:53,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:12:53,194 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_1250.c[1965,1978] [2021-02-23 13:12:53,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:12:53,210 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:12:53,239 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_1250.c[1965,1978] [2021-02-23 13:12:53,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:12:53,261 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:12:53,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:53 WrapperNode [2021-02-23 13:12:53,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:12:53,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:12:53,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:12:53,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:12:53,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:53" (1/1) ... [2021-02-23 13:12:53,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:53" (1/1) ... [2021-02-23 13:12:53,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:53" (1/1) ... [2021-02-23 13:12:53,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:53" (1/1) ... [2021-02-23 13:12:53,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:53" (1/1) ... [2021-02-23 13:12:53,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:53" (1/1) ... [2021-02-23 13:12:53,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:53" (1/1) ... [2021-02-23 13:12:53,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:12:53,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:12:53,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:12:53,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:12:53,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:53" (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 13:12:53,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:12:53,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:12:53,437 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:12:53,437 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 13:12:53,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-23 13:12:53,438 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2021-02-23 13:12:53,438 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:12:53,438 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:12:53,438 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:12:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:12:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:12:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-23 13:12:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 13:12:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-23 13:12:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 13:12:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:12:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:12:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2021-02-23 13:12:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:12:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:12:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:12:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:12:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 13:12:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:12:54,085 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:12:54,085 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 13:12:54,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:12:54 BoogieIcfgContainer [2021-02-23 13:12:54,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:12:54,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:12:54,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:12:54,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:12:54,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:12:52" (1/3) ... [2021-02-23 13:12:54,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff6458a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:12:54, skipping insertion in model container [2021-02-23 13:12:54,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:53" (2/3) ... [2021-02-23 13:12:54,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff6458a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:12:54, skipping insertion in model container [2021-02-23 13:12:54,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:12:54" (3/3) ... [2021-02-23 13:12:54,099 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2021-02-23 13:12:54,107 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:12:54,113 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:12:54,136 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:12:54,170 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:12:54,170 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:12:54,170 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:12:54,171 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:12:54,171 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:12:54,171 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:12:54,171 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:12:54,171 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:12:54,193 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-02-23 13:12:54,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 13:12:54,201 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:54,202 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] [2021-02-23 13:12:54,203 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:54,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:54,212 INFO L82 PathProgramCache]: Analyzing trace with hash 175497070, now seen corresponding path program 1 times [2021-02-23 13:12:54,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:54,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812440144] [2021-02-23 13:12:54,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:12:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:12:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 13:12:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 13:12:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,731 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 13:12:54,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812440144] [2021-02-23 13:12:54,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:12:54,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 13:12:54,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032699008] [2021-02-23 13:12:54,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 13:12:54,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:12:54,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 13:12:54,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 13:12:54,763 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2021-02-23 13:12:55,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:12:55,035 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2021-02-23 13:12:55,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:12:55,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2021-02-23 13:12:55,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:12:55,048 INFO L225 Difference]: With dead ends: 71 [2021-02-23 13:12:55,048 INFO L226 Difference]: Without dead ends: 36 [2021-02-23 13:12:55,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:12:55,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-23 13:12:55,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-02-23 13:12:55,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-23 13:12:55,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2021-02-23 13:12:55,109 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2021-02-23 13:12:55,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:12:55,110 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2021-02-23 13:12:55,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 13:12:55,110 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2021-02-23 13:12:55,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 13:12:55,113 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:55,113 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] [2021-02-23 13:12:55,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:12:55,114 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:55,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:55,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1646180679, now seen corresponding path program 1 times [2021-02-23 13:12:55,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:55,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473731233] [2021-02-23 13:12:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:55,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:55,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:55,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:12:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:55,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:55,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:12:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:55,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:55,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:12:55,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:55,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 13:12:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:55,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:55,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:12:55,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-23 13:12:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:55,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:55,387 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 13:12:55,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473731233] [2021-02-23 13:12:55,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:12:55,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:12:55,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894143286] [2021-02-23 13:12:55,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:12:55,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:12:55,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:12:55,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:12:55,392 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 6 states. [2021-02-23 13:12:55,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:12:55,692 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2021-02-23 13:12:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 13:12:55,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-02-23 13:12:55,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:12:55,696 INFO L225 Difference]: With dead ends: 51 [2021-02-23 13:12:55,697 INFO L226 Difference]: Without dead ends: 40 [2021-02-23 13:12:55,698 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 [2021-02-23 13:12:55,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-02-23 13:12:55,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-02-23 13:12:55,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-02-23 13:12:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2021-02-23 13:12:55,713 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2021-02-23 13:12:55,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:12:55,713 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2021-02-23 13:12:55,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:12:55,714 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2021-02-23 13:12:55,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-23 13:12:55,715 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:55,715 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] [2021-02-23 13:12:55,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:12:55,716 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:55,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:55,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1962849067, now seen corresponding path program 1 times [2021-02-23 13:12:55,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:55,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198307973] [2021-02-23 13:12:55,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:55,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:55,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:55,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:12:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:55,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:55,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:12:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:55,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:55,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:12:55,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:55,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 13:12:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:55,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:55,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:12:55,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 13:12:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:55,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:55,922 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 13:12:55,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198307973] [2021-02-23 13:12:55,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:12:55,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:12:55,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817659107] [2021-02-23 13:12:55,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:12:55,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:12:55,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:12:55,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:12:55,926 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2021-02-23 13:12:56,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:12:56,235 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2021-02-23 13:12:56,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 13:12:56,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2021-02-23 13:12:56,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:12:56,238 INFO L225 Difference]: With dead ends: 55 [2021-02-23 13:12:56,238 INFO L226 Difference]: Without dead ends: 44 [2021-02-23 13:12:56,239 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 [2021-02-23 13:12:56,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-02-23 13:12:56,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2021-02-23 13:12:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-02-23 13:12:56,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2021-02-23 13:12:56,250 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2021-02-23 13:12:56,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:12:56,251 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2021-02-23 13:12:56,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:12:56,251 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2021-02-23 13:12:56,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-23 13:12:56,252 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:56,253 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] [2021-02-23 13:12:56,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:12:56,253 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:56,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:56,254 INFO L82 PathProgramCache]: Analyzing trace with hash -455297258, now seen corresponding path program 1 times [2021-02-23 13:12:56,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:56,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817871333] [2021-02-23 13:12:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:12:56,286 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:12:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:12:56,310 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:12:56,350 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:12:56,351 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:12:56,351 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 13:12:56,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:12:56 BoogieIcfgContainer [2021-02-23 13:12:56,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:12:56,417 INFO L168 Benchmark]: Toolchain (without parser) took 3454.84 ms. Allocated memory was 155.2 MB in the beginning and 195.0 MB in the end (delta: 39.8 MB). Free memory was 129.5 MB in the beginning and 124.9 MB in the end (delta: 4.6 MB). Peak memory consumption was 45.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:56,424 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:12:56,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.79 ms. Allocated memory is still 155.2 MB. Free memory was 128.3 MB in the beginning and 117.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:56,427 INFO L168 Benchmark]: Boogie Preprocessor took 50.12 ms. Allocated memory is still 155.2 MB. Free memory was 117.8 MB in the beginning and 116.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:56,432 INFO L168 Benchmark]: RCFGBuilder took 773.32 ms. Allocated memory is still 155.2 MB. Free memory was 116.2 MB in the beginning and 135.4 MB in the end (delta: -19.2 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:56,433 INFO L168 Benchmark]: TraceAbstraction took 2324.67 ms. Allocated memory was 155.2 MB in the beginning and 195.0 MB in the end (delta: 39.8 MB). Free memory was 134.9 MB in the beginning and 124.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 50.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:56,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 286.79 ms. Allocated memory is still 155.2 MB. Free memory was 128.3 MB in the beginning and 117.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.12 ms. Allocated memory is still 155.2 MB. Free memory was 117.8 MB in the beginning and 116.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 773.32 ms. Allocated memory is still 155.2 MB. Free memory was 116.2 MB in the beginning and 135.4 MB in the end (delta: -19.2 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2324.67 ms. Allocated memory was 155.2 MB in the beginning and 195.0 MB in the end (delta: 39.8 MB). Free memory was 134.9 MB in the beginning and 124.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 50.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 74]: 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 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 69. Possible FailurePath: [L69] double x = 0.0 / 0.0; [L70] double y = 0.0 / 0.0; [L71] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4294967301, \old(y)=4294967303] [L57] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967301] [L29] __uint32_t msw, lsw; VAL [\old(x)=4294967301, x=4294967301] [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)) VAL [\old(x)=4294967301, lsw=4294967297, msw=4293918721, x=4294967301] [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967301, lsw=4294967297, msw=4293918721, x=4294967301] [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967301, lsw=4294967297, msw=4293918721, x=4294967301] [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; VAL [\old(x)=4294967301, \result=0, lsw=4294967297, msw=4293918721, x=4294967301] [L57] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967301, \old(y)=4294967303, __fpclassify_double(x)=0, x=4294967301, y=4294967303] [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; VAL [\old(x)=4294967301, \old(y)=4294967303, \result=4294967303, x=4294967301, y=4294967303] [L71] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4294967303, x=4294967301, y=4294967303] [L71] double res = fmax_double(x, y); [L73] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967303] [L18] return x != x; VAL [\old(x)=4294967303, \result=0, x=4294967303] [L73] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967303, x=4294967301, y=4294967303] [L73] COND TRUE !isnan_double(res) [L74] reach_error() VAL [res=4294967303, x=4294967301, y=4294967303] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 30 SDslu, 213 SDs, 0 SdLazy, 162 SolverSat, 32 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, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 6902 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...