/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_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:57:39,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:57:39,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:57:39,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 21:57:39,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 21:57:39,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 21:57:39,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 21:57:39,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 21:57:39,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 21:57:39,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 21:57:39,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 21:57:39,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 21:57:39,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:57:39,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:57:39,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:57:39,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:57:39,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:57:39,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:57:39,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:57:39,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:57:39,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:57:39,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:57:39,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:57:39,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:57:39,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 21:57:39,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:57:39,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:57:39,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:57:39,368 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 [2020-11-06 21:57:39,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:57:39,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:57:39,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:57:39,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:57:39,399 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:57:39,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:57:39,400 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:57:39,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:57:39,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:57:39,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:57:39,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:57:39,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:57:39,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:57:39,402 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:57:39,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:57:39,402 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:57:39,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:57:39,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:57:39,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:57:39,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:57:39,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:57:39,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:57:39,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:57:39,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:57:39,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:57:39,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:57:39,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:57:39,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:57:39,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:57:39,406 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:57:39,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:57:39,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:57:39,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:57:39,850 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:57:39,851 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:57:39,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-11-06 21:57:39,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a688c85d9/908602daa3794e94909ecd10239b7147/FLAG742232af8 [2020-11-06 21:57:40,620 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:57:40,621 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-11-06 21:57:40,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a688c85d9/908602daa3794e94909ecd10239b7147/FLAG742232af8 [2020-11-06 21:57:41,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a688c85d9/908602daa3794e94909ecd10239b7147 [2020-11-06 21:57:41,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:57:41,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:57:41,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:41,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:57:41,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:57:41,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:41" (1/1) ... [2020-11-06 21:57:41,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7862d79a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:41, skipping insertion in model container [2020-11-06 21:57:41,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:41" (1/1) ... [2020-11-06 21:57:41,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:57:41,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:57:41,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:41,313 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:57:41,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:41,361 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:57:41,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:41 WrapperNode [2020-11-06 21:57:41,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:41,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:57:41,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:57:41,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:57:41,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:41" (1/1) ... [2020-11-06 21:57:41,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:41" (1/1) ... [2020-11-06 21:57:41,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:41" (1/1) ... [2020-11-06 21:57:41,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:41" (1/1) ... [2020-11-06 21:57:41,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:41" (1/1) ... [2020-11-06 21:57:41,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:41" (1/1) ... [2020-11-06 21:57:41,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:41" (1/1) ... [2020-11-06 21:57:41,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:57:41,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:57:41,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:57:41,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:57:41,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:41" (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 [2020-11-06 21:57:41,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:57:41,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:57:41,498 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:57:41,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-11-06 21:57:41,498 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-11-06 21:57:41,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-11-06 21:57:41,498 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:57:41,499 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:57:41,499 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:57:41,499 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:57:41,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:57:41,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-11-06 21:57:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-11-06 21:57:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-06 21:57:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:57:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:57:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-11-06 21:57:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-11-06 21:57:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:57:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:57:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:57:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:57:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:57:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-06 21:57:42,130 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:57:42,130 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-06 21:57:42,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:42 BoogieIcfgContainer [2020-11-06 21:57:42,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:57:42,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:57:42,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:57:42,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:57:42,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:41" (1/3) ... [2020-11-06 21:57:42,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c987f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:42, skipping insertion in model container [2020-11-06 21:57:42,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:41" (2/3) ... [2020-11-06 21:57:42,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c987f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:42, skipping insertion in model container [2020-11-06 21:57:42,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:42" (3/3) ... [2020-11-06 21:57:42,142 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2020-11-06 21:57:42,159 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:57:42,162 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:57:42,174 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:57:42,199 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:57:42,200 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:57:42,200 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:57:42,200 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:57:42,200 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:57:42,200 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:57:42,200 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:57:42,201 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:57:42,233 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-11-06 21:57:42,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 21:57:42,239 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:42,240 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] [2020-11-06 21:57:42,241 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:42,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:42,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1163153451, now seen corresponding path program 1 times [2020-11-06 21:57:42,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:42,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783918289] [2020-11-06 21:57:42,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:42,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:57:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:42,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 21:57:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:42,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 21:57:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:57:42,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783918289] [2020-11-06 21:57:42,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:57:42,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:57:42,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899147441] [2020-11-06 21:57:42,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:57:42,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:57:42,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:57:42,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:57:42,608 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 4 states. [2020-11-06 21:57:42,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:57:42,959 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2020-11-06 21:57:42,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 21:57:42,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-06 21:57:42,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:57:42,974 INFO L225 Difference]: With dead ends: 84 [2020-11-06 21:57:42,974 INFO L226 Difference]: Without dead ends: 41 [2020-11-06 21:57:42,981 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 [2020-11-06 21:57:43,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-06 21:57:43,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-06 21:57:43,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-06 21:57:43,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-11-06 21:57:43,055 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 23 [2020-11-06 21:57:43,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:57:43,055 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-11-06 21:57:43,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:57:43,056 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-11-06 21:57:43,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-06 21:57:43,060 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:43,060 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] [2020-11-06 21:57:43,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:57:43,061 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:43,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:43,062 INFO L82 PathProgramCache]: Analyzing trace with hash 51245620, now seen corresponding path program 1 times [2020-11-06 21:57:43,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:43,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13876585] [2020-11-06 21:57:43,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:43,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:57:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:43,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 21:57:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:43,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 21:57:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:57:43,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13876585] [2020-11-06 21:57:43,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:57:43,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 21:57:43,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767769884] [2020-11-06 21:57:43,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 21:57:43,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:57:43,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 21:57:43,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 21:57:43,350 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-11-06 21:57:43,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:57:43,681 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-11-06 21:57:43,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 21:57:43,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-06 21:57:43,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:57:43,686 INFO L225 Difference]: With dead ends: 61 [2020-11-06 21:57:43,686 INFO L226 Difference]: Without dead ends: 45 [2020-11-06 21:57:43,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-06 21:57:43,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-06 21:57:43,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-06 21:57:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-06 21:57:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-11-06 21:57:43,702 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 24 [2020-11-06 21:57:43,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:57:43,703 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-11-06 21:57:43,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 21:57:43,703 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-11-06 21:57:43,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-06 21:57:43,704 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:43,705 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] [2020-11-06 21:57:43,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 21:57:43,705 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:43,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:43,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1625087789, now seen corresponding path program 1 times [2020-11-06 21:57:43,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:43,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401950978] [2020-11-06 21:57:43,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:43,742 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:43,806 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:43,838 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:57:43,839 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:57:43,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 21:57:43,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:57:43 BoogieIcfgContainer [2020-11-06 21:57:43,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:57:43,882 INFO L168 Benchmark]: Toolchain (without parser) took 2862.43 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 126.7 MB in the beginning and 170.9 MB in the end (delta: -44.2 MB). Peak memory consumption was 80.6 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:43,883 INFO L168 Benchmark]: CDTParser took 1.42 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 125.6 MB in the end (delta: 83.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:57:43,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.53 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:43,885 INFO L168 Benchmark]: Boogie Preprocessor took 49.77 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 113.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:43,886 INFO L168 Benchmark]: RCFGBuilder took 719.06 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 94.2 MB in the end (delta: 19.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:43,887 INFO L168 Benchmark]: TraceAbstraction took 1744.79 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 93.8 MB in the beginning and 170.9 MB in the end (delta: -77.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:43,893 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.42 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 125.6 MB in the end (delta: 83.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 334.53 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.77 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 113.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 719.06 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 94.2 MB in the end (delta: 19.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1744.79 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 93.8 MB in the beginning and 170.9 MB in the end (delta: -77.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 86, overapproximation of someUnaryDOUBLEoperation at line 81. Possible FailurePath: [L81] double x = -0.0; [L82] double y = 0.0; VAL [y=0] [L83] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4294967302, \old(y)=0] [L54] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967302] [L26] __uint32_t msw, lsw; VAL [\old(x)=4294967302, x=4294967302] [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967302, lsw=4294967297, msw=2146435073, x=4294967302] [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=2146435073, x=4294967302] [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=2146435073, x=4294967302] [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; VAL [\old(x)=4294967302, \result=0, lsw=4294967297, msw=2146435073, x=4294967302] [L54] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967302, \old(y)=0, __fpclassify_double(x)=0, x=4294967302, y=0] [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; VAL [\old(x)=4294967302, \old(y)=0, \result=0, x=4294967302, y=0] [L83] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=0, x=4294967302, y=0] [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=4294967302, y=0] [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L87] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1252a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 94 SDtfs, 20 SDslu, 146 SDs, 0 SdLazy, 113 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 3627 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...