/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/float_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:20:32,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:20:32,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:20:32,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:20:32,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:20:32,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:20:32,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:20:32,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:20:32,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:20:32,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:20:32,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:20:32,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:20:32,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:20:32,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:20:32,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:20:32,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:20:32,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:20:32,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:20:32,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:20:32,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:20:32,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:20:32,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:20:32,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:20:32,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:20:32,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:20:32,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:20:32,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:20:32,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:20:32,482 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 [2021-02-19 17:20:32,537 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:20:32,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:20:32,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:20:32,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:20:32,540 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:20:32,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:20:32,541 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:20:32,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:20:32,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:20:32,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:20:32,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:20:32,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:20:32,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:20:32,543 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:20:32,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:20:32,543 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:20:32,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:20:32,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:20:32,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:20:32,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:20:32,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:20:32,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:20:32,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:20:32,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:20:32,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:20:32,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:20:32,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:20:32,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:20:32,546 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:20:32,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:20:32,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:20:32,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:20:32,944 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:20:32,945 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:20:32,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2021-02-19 17:20:33,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/679b06859/ed8df68c51cd43c9bacb028196d50a38/FLAGcd58bf8e5 [2021-02-19 17:20:33,591 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:20:33,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2021-02-19 17:20:33,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/679b06859/ed8df68c51cd43c9bacb028196d50a38/FLAGcd58bf8e5 [2021-02-19 17:20:33,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/679b06859/ed8df68c51cd43c9bacb028196d50a38 [2021-02-19 17:20:33,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:20:33,977 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:20:33,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:20:33,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:20:33,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:20:33,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:20:33" (1/1) ... [2021-02-19 17:20:33,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26403eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:33, skipping insertion in model container [2021-02-19 17:20:33,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:20:33" (1/1) ... [2021-02-19 17:20:34,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:20:34,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:20:34,255 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/float_req_bl_1130a.c[2907,2920] [2021-02-19 17:20:34,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:20:34,269 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:20:34,317 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/float_req_bl_1130a.c[2907,2920] [2021-02-19 17:20:34,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:20:34,338 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:20:34,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34 WrapperNode [2021-02-19 17:20:34,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:20:34,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:20:34,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:20:34,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:20:34,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (1/1) ... [2021-02-19 17:20:34,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (1/1) ... [2021-02-19 17:20:34,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (1/1) ... [2021-02-19 17:20:34,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (1/1) ... [2021-02-19 17:20:34,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (1/1) ... [2021-02-19 17:20:34,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (1/1) ... [2021-02-19 17:20:34,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (1/1) ... [2021-02-19 17:20:34,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:20:34,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:20:34,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:20:34,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:20:34,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (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 [2021-02-19 17:20:34,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:20:34,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:20:34,528 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:20:34,529 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2021-02-19 17:20:34,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2021-02-19 17:20:34,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:20:34,530 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:20:34,531 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:20:34,532 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:20:34,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:20:34,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-19 17:20:34,533 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2021-02-19 17:20:34,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-19 17:20:34,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:20:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:20:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-19 17:20:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:20:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2021-02-19 17:20:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:20:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:20:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:20:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-19 17:20:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:20:35,228 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:20:35,228 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-02-19 17:20:35,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:20:35 BoogieIcfgContainer [2021-02-19 17:20:35,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:20:35,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:20:35,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:20:35,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:20:35,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:20:33" (1/3) ... [2021-02-19 17:20:35,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43fdfb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:20:35, skipping insertion in model container [2021-02-19 17:20:35,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (2/3) ... [2021-02-19 17:20:35,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43fdfb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:20:35, skipping insertion in model container [2021-02-19 17:20:35,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:20:35" (3/3) ... [2021-02-19 17:20:35,242 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2021-02-19 17:20:35,251 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:20:35,257 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:20:35,304 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:20:35,336 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:20:35,337 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:20:35,337 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:20:35,337 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:20:35,338 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:20:35,338 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:20:35,338 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:20:35,338 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:20:35,360 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2021-02-19 17:20:35,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-19 17:20:35,367 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:20:35,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:20:35,369 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:20:35,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:20:35,376 INFO L82 PathProgramCache]: Analyzing trace with hash -684118545, now seen corresponding path program 1 times [2021-02-19 17:20:35,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:20:35,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341010877] [2021-02-19 17:20:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:20:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:20:35,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:35,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:35,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:35,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:35,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:20:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:20:35,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:35,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:35,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:20:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:20:35,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:35,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:35,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:35,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:20:35,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341010877] [2021-02-19 17:20:35,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:20:35,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 17:20:35,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240806001] [2021-02-19 17:20:35,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 17:20:35,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:20:35,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 17:20:35,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 17:20:35,768 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2021-02-19 17:20:36,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:20:36,091 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2021-02-19 17:20:36,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:20:36,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-02-19 17:20:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:20:36,103 INFO L225 Difference]: With dead ends: 116 [2021-02-19 17:20:36,103 INFO L226 Difference]: Without dead ends: 56 [2021-02-19 17:20:36,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-19 17:20:36,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-02-19 17:20:36,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-02-19 17:20:36,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-19 17:20:36,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2021-02-19 17:20:36,154 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2021-02-19 17:20:36,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:20:36,155 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2021-02-19 17:20:36,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 17:20:36,155 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2021-02-19 17:20:36,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-19 17:20:36,156 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:20:36,157 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] [2021-02-19 17:20:36,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:20:36,157 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:20:36,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:20:36,158 INFO L82 PathProgramCache]: Analyzing trace with hash -799690004, now seen corresponding path program 1 times [2021-02-19 17:20:36,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:20:36,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221001221] [2021-02-19 17:20:36,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:20:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:20:36,231 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:20:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:20:36,294 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:20:36,329 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:20:36,329 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:20:36,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:20:36,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:20:36 BoogieIcfgContainer [2021-02-19 17:20:36,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:20:36,393 INFO L168 Benchmark]: Toolchain (without parser) took 2425.82 ms. Allocated memory is still 161.5 MB. Free memory was 136.0 MB in the beginning and 79.2 MB in the end (delta: 56.8 MB). Peak memory consumption was 57.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:36,396 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 161.5 MB. Free memory is still 134.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:20:36,398 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.11 ms. Allocated memory is still 161.5 MB. Free memory was 134.8 MB in the beginning and 122.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:36,399 INFO L168 Benchmark]: Boogie Preprocessor took 62.11 ms. Allocated memory is still 161.5 MB. Free memory was 122.8 MB in the beginning and 120.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:36,400 INFO L168 Benchmark]: RCFGBuilder took 827.02 ms. Allocated memory is still 161.5 MB. Free memory was 120.6 MB in the beginning and 93.6 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:36,401 INFO L168 Benchmark]: TraceAbstraction took 1152.47 ms. Allocated memory is still 161.5 MB. Free memory was 93.2 MB in the beginning and 79.2 MB in the end (delta: 14.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:36,405 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 161.5 MB. Free memory is still 134.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 358.11 ms. Allocated memory is still 161.5 MB. Free memory was 134.8 MB in the beginning and 122.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.11 ms. Allocated memory is still 161.5 MB. Free memory was 122.8 MB in the beginning and 120.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 827.02 ms. Allocated memory is still 161.5 MB. Free memory was 120.6 MB in the beginning and 93.6 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1152.47 ms. Allocated memory is still 161.5 MB. Free memory was 93.2 MB in the beginning and 79.2 MB in the end (delta: 14.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 137]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=4294967308, \old(Zero_fmod)=4294967306, \old(Zero_fmod)=4294967300, one_fmod=1, Zero_fmod={9:0}] [L128] float x = 0.0f; [L129] float y = __VERIFIER_nondet_float(); [L131] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=4294967307, Zero_fmod={9:0}] [L133] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=4294967307, one_fmod=1, Zero_fmod={9:0}] [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=4294967307, one_fmod=1, x=0, y=4294967307, Zero_fmod={9:0}] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=4294967307, one_fmod=1, sx=-1, x=0, y=4294967307, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=4294967307, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=0, y=4294967307, Zero_fmod={9:0}] [L133] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=4294967296, one_fmod=1, x=0, y=4294967307, Zero_fmod={9:0}] [L133] float res = fmod_float(x, y); [L136] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, res=4294967296, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4294967307, Zero_fmod={9:0}] [L136] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L137] reach_error() VAL [one_fmod=1, res=4294967296, x=0, y=4294967307, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 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: 75 SDtfs, 14 SDslu, 61 SDs, 0 SdLazy, 80 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 0.2s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1242 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...