/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_1232b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:12:50,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:12:50,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:12:50,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:12:50,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:12:50,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:12:50,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:12:50,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:12:50,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:12:50,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:12:50,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:12:50,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:12:50,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:12:50,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:12:50,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:12:50,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:12:50,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:12:50,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:12:50,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:12:50,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:12:50,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:12:50,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:12:50,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:12:50,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:12:50,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:12:51,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:12:51,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:12:51,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:12:51,009 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 13:12:51,053 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:12:51,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:12:51,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:12:51,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:12:51,058 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:12:51,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:12:51,059 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:12:51,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:12:51,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:12:51,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:12:51,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:12:51,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:12:51,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:12:51,061 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:12:51,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:12:51,061 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:12:51,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:12:51,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:12:51,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:12:51,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:12:51,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:12:51,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:12:51,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:12:51,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:12:51,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:12:51,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:12:51,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:12:51,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:12:51,064 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:12:51,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:12:51,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:12:51,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:12:51,469 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:12:51,470 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:12:51,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c [2021-02-23 13:12:51,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57233a28f/ed80ec36d1834f8fbff5941da178792c/FLAG45852a700 [2021-02-23 13:12:52,223 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:12:52,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c [2021-02-23 13:12:52,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57233a28f/ed80ec36d1834f8fbff5941da178792c/FLAG45852a700 [2021-02-23 13:12:52,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57233a28f/ed80ec36d1834f8fbff5941da178792c [2021-02-23 13:12:52,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:12:52,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:12:52,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:12:52,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:12:52,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:12:52,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cca718b 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 13:12:52,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:12:52,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:12:52,817 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_1232b.c[1958,1971] [2021-02-23 13:12:52,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:12:52,830 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:12:52,858 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_1232b.c[1958,1971] [2021-02-23 13:12:52,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:12:52,878 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:12:52,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52 WrapperNode [2021-02-23 13:12:52,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:12:52,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:12:52,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:12:52,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:12:52,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:12:52,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:12:52,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:12:52,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:12:52,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (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 13:12:53,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:12:53,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:12:53,024 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:12:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 13:12:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-23 13:12:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2021-02-23 13:12:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-23 13:12:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:12:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:12:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:12:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:12:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:12:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-23 13:12:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 13:12:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-23 13:12:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 13:12:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:12:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:12:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2021-02-23 13:12:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-23 13:12:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:12:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:12:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:12:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:12:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:12:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 13:12:53,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:12:53,451 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 13:12:53,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:12:53 BoogieIcfgContainer [2021-02-23 13:12:53,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:12:53,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:12:53,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:12:53,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:12:53,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:12:52" (1/3) ... [2021-02-23 13:12:53,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72687f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:12:53, skipping insertion in model container [2021-02-23 13:12:53,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (2/3) ... [2021-02-23 13:12:53,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72687f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:12:53, skipping insertion in model container [2021-02-23 13:12:53,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:12:53" (3/3) ... [2021-02-23 13:12:53,465 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2021-02-23 13:12:53,472 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:12:53,476 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:12:53,496 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:12:53,526 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:12:53,526 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:12:53,526 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:12:53,526 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:12:53,526 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:12:53,527 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:12:53,527 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:12:53,527 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:12:53,546 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2021-02-23 13:12:53,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-23 13:12:53,553 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:53,554 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] [2021-02-23 13:12:53,555 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:53,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:53,562 INFO L82 PathProgramCache]: Analyzing trace with hash -272120335, now seen corresponding path program 1 times [2021-02-23 13:12:53,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:53,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113545096] [2021-02-23 13:12:53,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:53,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:12:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:53,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:12:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:53,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 13:12:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:53,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,978 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 13:12:53,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113545096] [2021-02-23 13:12:53,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:12:53,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 13:12:53,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613683152] [2021-02-23 13:12:53,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 13:12:53,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:12:54,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 13:12:54,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 13:12:54,004 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2021-02-23 13:12:54,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:12:54,181 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2021-02-23 13:12:54,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:12:54,183 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2021-02-23 13:12:54,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:12:54,193 INFO L225 Difference]: With dead ends: 79 [2021-02-23 13:12:54,194 INFO L226 Difference]: Without dead ends: 40 [2021-02-23 13:12:54,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:12:54,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-02-23 13:12:54,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-02-23 13:12:54,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-02-23 13:12:54,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2021-02-23 13:12:54,251 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2021-02-23 13:12:54,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:12:54,251 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2021-02-23 13:12:54,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 13:12:54,252 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2021-02-23 13:12:54,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-23 13:12:54,254 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:54,254 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] [2021-02-23 13:12:54,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:12:54,255 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:54,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:54,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1243775035, now seen corresponding path program 1 times [2021-02-23 13:12:54,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:54,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645194630] [2021-02-23 13:12:54,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:12:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:12:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:12:54,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 13:12:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:12:54,525 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 13:12:54,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645194630] [2021-02-23 13:12:54,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:12:54,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:12:54,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193925879] [2021-02-23 13:12:54,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:12:54,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:12:54,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:12:54,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:12:54,531 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2021-02-23 13:12:54,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:12:54,770 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2021-02-23 13:12:54,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 13:12:54,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2021-02-23 13:12:54,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:12:54,776 INFO L225 Difference]: With dead ends: 59 [2021-02-23 13:12:54,777 INFO L226 Difference]: Without dead ends: 44 [2021-02-23 13:12:54,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 13:12:54,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-02-23 13:12:54,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-02-23 13:12:54,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-23 13:12:54,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2021-02-23 13:12:54,812 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2021-02-23 13:12:54,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:12:54,814 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2021-02-23 13:12:54,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:12:54,815 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2021-02-23 13:12:54,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 13:12:54,816 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:54,818 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 13:12:54,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:12:54,818 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:54,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:54,820 INFO L82 PathProgramCache]: Analyzing trace with hash 2128381336, now seen corresponding path program 1 times [2021-02-23 13:12:54,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:54,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608291053] [2021-02-23 13:12:54,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:12:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:12:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:55,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:55,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:12:55,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:55,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 13:12:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:55,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:55,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:55,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:12:55,086 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 13:12:55,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608291053] [2021-02-23 13:12:55,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:12:55,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:12:55,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547226351] [2021-02-23 13:12:55,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:12:55,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:12:55,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:12:55,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:12:55,090 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2021-02-23 13:12:55,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:12:55,234 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2021-02-23 13:12:55,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 13:12:55,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2021-02-23 13:12:55,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:12:55,236 INFO L225 Difference]: With dead ends: 63 [2021-02-23 13:12:55,236 INFO L226 Difference]: Without dead ends: 48 [2021-02-23 13:12:55,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 13:12:55,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-02-23 13:12:55,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2021-02-23 13:12:55,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-23 13:12:55,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2021-02-23 13:12:55,246 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2021-02-23 13:12:55,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:12:55,247 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2021-02-23 13:12:55,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:12:55,247 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2021-02-23 13:12:55,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 13:12:55,248 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:55,249 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 13:12:55,249 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:12:55,249 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:55,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:55,250 INFO L82 PathProgramCache]: Analyzing trace with hash 331429977, now seen corresponding path program 1 times [2021-02-23 13:12:55,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:55,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675096649] [2021-02-23 13:12:55,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:12:55,275 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:12:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:12:55,294 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:12:55,323 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:12:55,323 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:12:55,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 13:12:55,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:12:55 BoogieIcfgContainer [2021-02-23 13:12:55,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:12:55,361 INFO L168 Benchmark]: Toolchain (without parser) took 2767.20 ms. Allocated memory was 152.0 MB in the beginning and 184.5 MB in the end (delta: 32.5 MB). Free memory was 126.5 MB in the beginning and 109.3 MB in the end (delta: 17.2 MB). Peak memory consumption was 50.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:55,362 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:12:55,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.88 ms. Allocated memory is still 152.0 MB. Free memory was 125.4 MB in the beginning and 114.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:55,364 INFO L168 Benchmark]: Boogie Preprocessor took 43.14 ms. Allocated memory is still 152.0 MB. Free memory was 114.7 MB in the beginning and 113.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:55,364 INFO L168 Benchmark]: RCFGBuilder took 529.69 ms. Allocated memory is still 152.0 MB. Free memory was 112.9 MB in the beginning and 126.7 MB in the end (delta: -13.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:55,365 INFO L168 Benchmark]: TraceAbstraction took 1904.59 ms. Allocated memory was 152.0 MB in the beginning and 184.5 MB in the end (delta: 32.5 MB). Free memory was 126.2 MB in the beginning and 109.3 MB in the end (delta: 16.9 MB). Peak memory consumption was 49.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:55,369 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 269.88 ms. Allocated memory is still 152.0 MB. Free memory was 125.4 MB in the beginning and 114.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.14 ms. Allocated memory is still 152.0 MB. Free memory was 114.7 MB in the beginning and 113.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 529.69 ms. Allocated memory is still 152.0 MB. Free memory was 112.9 MB in the beginning and 126.7 MB in the end (delta: -13.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1904.59 ms. Allocated memory was 152.0 MB in the beginning and 184.5 MB in the end (delta: 32.5 MB). Free memory was 126.2 MB in the beginning and 109.3 MB in the end (delta: 16.9 MB). Peak memory consumption was 49.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 82]: 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 81, overapproximation of someUnaryDOUBLEoperation at line 76. Possible FailurePath: [L76] double x = -0.0; [L77] double y = 0.0; VAL [y=0] [L78] CALL, EXPR fmin_double(x, y) VAL [\old(x)=4294967306, \old(y)=0] [L48] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967306] [L21] __uint32_t msw, lsw; VAL [\old(x)=4294967306, x=4294967306] [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967306, lsw=4294967297, msw=4293918721, x=4294967306] [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967306, lsw=4294967297, msw=4293918721, x=4294967306] [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967306, lsw=4294967297, msw=4293918721, x=4294967306] [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L44] return 0; VAL [\old(x)=4294967306, \result=0, lsw=4294967297, msw=4293918721, x=4294967306] [L48] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967306, \old(y)=0, __fpclassify_double(x)=0, x=4294967306, y=0] [L48] COND TRUE __fpclassify_double(x) == 0 [L49] return y; VAL [\old(x)=4294967306, \old(y)=0, \result=0, x=4294967306, y=0] [L78] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=0, x=4294967306, y=0] [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=0, res == -0.0 && __signbit_double(res) == 1=0, x=4294967306, y=0] [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L82] reach_error() VAL [res=0, x=4294967306, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 24 SDslu, 254 SDs, 0 SdLazy, 180 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 0.6s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 5598 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...