/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1071.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:34:16,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:34:16,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:34:16,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:34:16,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:34:16,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:34:16,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:34:16,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:34:16,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:34:16,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:34:16,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:34:16,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:34:16,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:34:16,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:34:16,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:34:16,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:34:16,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:34:16,451 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 22:34:16,474 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:34:16,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:34:16,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:34:16,478 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:34:16,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:34:16,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:34:16,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:34:16,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:34:16,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:34:16,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:34:16,481 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:34:16,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:34:16,481 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:34:16,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:34:16,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:34:16,482 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:34:16,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:34:16,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:34:16,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:34:16,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:34:16,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:34:16,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:34:16,484 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:34:16,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:34:16,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:34:16,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:34:16,930 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:34:16,932 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:34:16,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2021-02-23 22:34:17,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c44ee83af/4bf691bec6034e9086c9361f7d03395f/FLAGa014e4eab [2021-02-23 22:34:17,657 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:34:17,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2021-02-23 22:34:17,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c44ee83af/4bf691bec6034e9086c9361f7d03395f/FLAGa014e4eab [2021-02-23 22:34:17,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c44ee83af/4bf691bec6034e9086c9361f7d03395f [2021-02-23 22:34:17,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:34:17,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:34:17,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:34:17,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:34:17,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:34:17,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:17" (1/1) ... [2021-02-23 22:34:17,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f76f376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:17, skipping insertion in model container [2021-02-23 22:34:17,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:17" (1/1) ... [2021-02-23 22:34:17,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:34:17,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:34:17,906 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_1071.c[1883,1896] [2021-02-23 22:34:17,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:34:17,921 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:34:17,949 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_1071.c[1883,1896] [2021-02-23 22:34:17,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:34:17,967 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:34:17,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:17 WrapperNode [2021-02-23 22:34:17,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:34:17,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:34:17,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:34:17,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:34:17,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:17" (1/1) ... [2021-02-23 22:34:17,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:17" (1/1) ... [2021-02-23 22:34:17,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:17" (1/1) ... [2021-02-23 22:34:17,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:17" (1/1) ... [2021-02-23 22:34:18,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:17" (1/1) ... [2021-02-23 22:34:18,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:17" (1/1) ... [2021-02-23 22:34:18,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:17" (1/1) ... [2021-02-23 22:34:18,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:34:18,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:34:18,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:34:18,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:34:18,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:17" (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 22:34:18,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:34:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:34:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:34:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 22:34:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2021-02-23 22:34:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:34:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:34:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:34:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:34:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:34:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 22:34:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2021-02-23 22:34:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 22:34:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:34:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:34:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:34:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 22:34:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:34:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:34:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:34:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:34:18,619 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:34:18,619 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-02-23 22:34:18,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:18 BoogieIcfgContainer [2021-02-23 22:34:18,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:34:18,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:34:18,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:34:18,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:34:18,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:34:17" (1/3) ... [2021-02-23 22:34:18,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa814a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:18, skipping insertion in model container [2021-02-23 22:34:18,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:17" (2/3) ... [2021-02-23 22:34:18,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa814a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:18, skipping insertion in model container [2021-02-23 22:34:18,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:18" (3/3) ... [2021-02-23 22:34:18,631 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1071.c [2021-02-23 22:34:18,639 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:34:18,644 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:34:18,668 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:34:18,696 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:34:18,696 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:34:18,696 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:34:18,697 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:34:18,697 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:34:18,697 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:34:18,697 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:34:18,697 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:34:18,717 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2021-02-23 22:34:18,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-23 22:34:18,728 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:18,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:34:18,730 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:18,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:18,736 INFO L82 PathProgramCache]: Analyzing trace with hash -290110632, now seen corresponding path program 1 times [2021-02-23 22:34:18,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:18,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622105195] [2021-02-23 22:34:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:18,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:18,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:18,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:18,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:18,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:34:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:19,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:19,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:19,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:34:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:19,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:19,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:19,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:19,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:19,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 22:34:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:19,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:19,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:19,058 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 22:34:19,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622105195] [2021-02-23 22:34:19,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:34:19,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 22:34:19,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62019028] [2021-02-23 22:34:19,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 22:34:19,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:34:19,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 22:34:19,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 22:34:19,086 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 4 states. [2021-02-23 22:34:19,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:34:19,377 INFO L93 Difference]: Finished difference Result 152 states and 176 transitions. [2021-02-23 22:34:19,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 22:34:19,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2021-02-23 22:34:19,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:34:19,390 INFO L225 Difference]: With dead ends: 152 [2021-02-23 22:34:19,391 INFO L226 Difference]: Without dead ends: 79 [2021-02-23 22:34:19,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 22:34:19,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-02-23 22:34:19,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-02-23 22:34:19,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-23 22:34:19,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2021-02-23 22:34:19,449 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 39 [2021-02-23 22:34:19,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:34:19,450 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2021-02-23 22:34:19,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 22:34:19,450 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2021-02-23 22:34:19,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-23 22:34:19,452 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:19,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:34:19,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:34:19,453 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:19,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:19,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1020669440, now seen corresponding path program 1 times [2021-02-23 22:34:19,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:19,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947937167] [2021-02-23 22:34:19,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:34:19,546 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:34:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:34:19,640 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:34:19,674 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:34:19,674 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:34:19,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:34:19,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:34:19 BoogieIcfgContainer [2021-02-23 22:34:19,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:34:19,743 INFO L168 Benchmark]: Toolchain (without parser) took 2056.39 ms. Allocated memory is still 152.0 MB. Free memory was 128.7 MB in the beginning and 117.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:19,744 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:34:19,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.31 ms. Allocated memory is still 152.0 MB. Free memory was 127.5 MB in the beginning and 117.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:19,749 INFO L168 Benchmark]: Boogie Preprocessor took 48.34 ms. Allocated memory is still 152.0 MB. Free memory was 117.1 MB in the beginning and 115.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:19,750 INFO L168 Benchmark]: RCFGBuilder took 603.20 ms. Allocated memory is still 152.0 MB. Free memory was 115.1 MB in the beginning and 122.6 MB in the end (delta: -7.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:19,751 INFO L168 Benchmark]: TraceAbstraction took 1116.90 ms. Allocated memory is still 152.0 MB. Free memory was 122.1 MB in the beginning and 117.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 5.6 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:19,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.31 ms. Allocated memory is still 152.0 MB. Free memory was 127.5 MB in the beginning and 117.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.34 ms. Allocated memory is still 152.0 MB. Free memory was 117.1 MB in the beginning and 115.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 603.20 ms. Allocated memory is still 152.0 MB. Free memory was 115.1 MB in the beginning and 122.6 MB in the end (delta: -7.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1116.90 ms. Allocated memory is still 152.0 MB. Free memory was 122.1 MB in the beginning and 117.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 5.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 76]: 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 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 31. Possible FailurePath: [L70] double x = 0.0 / 0.0; [L72] CALL, EXPR trunc_double(x) VAL [\old(x)=4294967300] [L20] int signbit; VAL [\old(x)=4294967300, x=4294967300] [L21] int msw; VAL [\old(x)=4294967300, x=4294967300] [L22] unsigned int lsw; VAL [\old(x)=4294967300, x=4294967300] [L23] int exponent_less_1023; VAL [\old(x)=4294967300, x=4294967300] [L25] ieee_double_shape_type ew_u; VAL [\old(x)=4294967300, ew_u={3:0}, x=4294967300] [L26] ew_u.value = (x) VAL [\old(x)=4294967300, ew_u={3:0}, x=4294967300] [L27] EXPR ew_u.parts.msw VAL [\old(x)=4294967300, ew_u={3:0}, ew_u.parts.msw=4294967294, x=4294967300] [L27] (msw) = ew_u.parts.msw VAL [\old(x)=4294967300, ew_u={3:0}, ew_u.parts.msw=4294967294, msw=-2, x=4294967300] [L28] EXPR ew_u.parts.lsw VAL [\old(x)=4294967300, ew_u={3:0}, ew_u.parts.lsw=4294967299, msw=-2, x=4294967300] [L28] (lsw) = ew_u.parts.lsw VAL [\old(x)=4294967300, ew_u={3:0}, ew_u.parts.lsw=4294967299, lsw=3, msw=-2, x=4294967300] [L30] signbit = msw & 0x80000000 VAL [\old(x)=4294967300, lsw=3, msw=-2, signbit=9, x=4294967300] [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=4294967300, exponent_less_1023=1024, lsw=3, msw=-2, signbit=9, x=4294967300] [L32] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=4294967300, exponent_less_1023=1024, lsw=3, msw=-2, signbit=9, x=4294967300] [L49] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=4294967300, exponent_less_1023=1024, lsw=3, msw=-2, signbit=9, x=4294967300] [L50] COND TRUE exponent_less_1023 == 1024 VAL [\old(x)=4294967300, exponent_less_1023=1024, lsw=3, msw=-2, signbit=9, x=4294967300] [L51] return x + x; VAL [\old(x)=4294967300, exponent_less_1023=1024, lsw=3, msw=-2, signbit=9, x=4294967300] [L72] RET, EXPR trunc_double(x) VAL [trunc_double(x)=4294967302, x=4294967300] [L72] double res = trunc_double(x); VAL [res=4294967302, trunc_double(x)=4294967302, x=4294967300] [L75] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967302] [L17] return x != x; VAL [\old(x)=4294967302, \result=0, x=4294967302] [L75] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967302, x=4294967300] [L75] COND TRUE !isnan_double(res) VAL [isnan_double(res)=0, res=4294967302, x=4294967300] [L76] reach_error() VAL [res=4294967302, x=4294967300] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 19 SDslu, 49 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 3040 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...