/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -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 0.1.25-79ed534 [2020-07-20 03:19:51,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:19:51,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:19:51,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:19:51,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:19:51,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:19:51,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:19:51,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:19:51,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:19:51,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:19:51,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:19:51,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:19:51,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:19:51,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:19:51,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:19:51,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:19:51,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:19:51,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:19:51,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:19:51,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:19:51,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:19:51,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:19:51,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:19:51,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:19:51,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 03:19:51,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 03:19:51,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 03:19:51,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 03:19:51,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 03:19:51,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 03:19:51,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 03:19:51,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 03:19:51,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 03:19:51,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 03:19:51,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 03:19:51,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 03:19:51,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 03:19:51,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 03:19:51,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:19:51,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:19:51,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:19:51,182 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 [2020-07-20 03:19:51,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:19:51,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:19:51,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:19:51,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:19:51,198 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:19:51,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:19:51,199 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:19:51,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:19:51,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:19:51,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:19:51,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:19:51,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:19:51,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:19:51,200 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:19:51,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:19:51,200 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:19:51,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:19:51,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:19:51,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:19:51,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:19:51,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:19:51,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:19:51,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:19:51,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:19:51,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:19:51,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:19:51,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:19:51,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:19:51,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:19:51,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:19:51,463 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:19:51,483 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:19:51,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:19:51,488 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:19:51,489 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:19:51,489 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-07-20 03:19:51,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aac1c7dd2/02cfb7fee0cd4f65b8b3fc6f9e2b8e3e/FLAG2950b25b2 [2020-07-20 03:19:52,101 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:19:52,102 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-07-20 03:19:52,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aac1c7dd2/02cfb7fee0cd4f65b8b3fc6f9e2b8e3e/FLAG2950b25b2 [2020-07-20 03:19:52,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aac1c7dd2/02cfb7fee0cd4f65b8b3fc6f9e2b8e3e [2020-07-20 03:19:52,504 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:19:52,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:19:52,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:19:52,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:19:52,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:19:52,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:19:52" (1/1) ... [2020-07-20 03:19:52,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc5e0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:52, skipping insertion in model container [2020-07-20 03:19:52,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:19:52" (1/1) ... [2020-07-20 03:19:52,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:19:52,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:19:52,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:19:52,769 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:19:52,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:19:52,952 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:19:52,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:52 WrapperNode [2020-07-20 03:19:52,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:19:52,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:19:52,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:19:52,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:19:52,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:52" (1/1) ... [2020-07-20 03:19:52,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:52" (1/1) ... [2020-07-20 03:19:52,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:52" (1/1) ... [2020-07-20 03:19:52,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:52" (1/1) ... [2020-07-20 03:19:52,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:52" (1/1) ... [2020-07-20 03:19:53,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:52" (1/1) ... [2020-07-20 03:19:53,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:52" (1/1) ... [2020-07-20 03:19:53,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:19:53,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:19:53,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:19:53,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:19:53,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:19:53,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:19:53,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:19:53,076 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-20 03:19:53,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-07-20 03:19:53,076 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:19:53,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:19:53,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-20 03:19:53,076 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-20 03:19:53,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 03:19:53,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 03:19:53,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 03:19:53,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 03:19:53,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 03:19:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 03:19:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-07-20 03:19:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:19:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:19:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 03:19:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:19:53,547 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:19:53,547 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-20 03:19:53,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:19:53 BoogieIcfgContainer [2020-07-20 03:19:53,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:19:53,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:19:53,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:19:53,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:19:53,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:19:52" (1/3) ... [2020-07-20 03:19:53,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a6f298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:19:53, skipping insertion in model container [2020-07-20 03:19:53,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:52" (2/3) ... [2020-07-20 03:19:53,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a6f298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:19:53, skipping insertion in model container [2020-07-20 03:19:53,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:19:53" (3/3) ... [2020-07-20 03:19:53,571 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-07-20 03:19:53,585 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:19:53,596 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:19:53,613 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:19:53,643 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:19:53,644 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:19:53,644 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:19:53,644 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:19:53,645 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:19:53,645 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:19:53,646 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:19:53,646 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:19:53,668 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-07-20 03:19:53,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 03:19:53,675 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:19:53,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:19:53,677 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:19:53,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:19:53,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-07-20 03:19:53,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:19:53,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745522674] [2020-07-20 03:19:53,691 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@282e9fd0 [2020-07-20 03:19:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:19:54,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745522674] [2020-07-20 03:19:54,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:19:54,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 03:19:54,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950898955] [2020-07-20 03:19:54,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 03:19:54,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:19:54,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 03:19:54,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 03:19:54,056 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-07-20 03:19:54,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:19:54,322 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-07-20 03:19:54,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:19:54,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-07-20 03:19:54,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:19:54,336 INFO L225 Difference]: With dead ends: 116 [2020-07-20 03:19:54,337 INFO L226 Difference]: Without dead ends: 56 [2020-07-20 03:19:54,341 INFO L675 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 [2020-07-20 03:19:54,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-20 03:19:54,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-20 03:19:54,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-20 03:19:54,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-07-20 03:19:54,394 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-07-20 03:19:54,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:19:54,395 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-07-20 03:19:54,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 03:19:54,395 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-07-20 03:19:54,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 03:19:54,397 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:19:54,397 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] [2020-07-20 03:19:54,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:19:54,398 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:19:54,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:19:54,398 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-07-20 03:19:54,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:19:54,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195184736] [2020-07-20 03:19:54,399 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@282e9fd0 [2020-07-20 03:19:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:19:54,531 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:19:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:19:54,583 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:19:54,616 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 03:19:54,616 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 03:19:54,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:19:54,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:19:54 BoogieIcfgContainer [2020-07-20 03:19:54,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:19:54,679 INFO L168 Benchmark]: Toolchain (without parser) took 2171.70 ms. Allocated memory was 138.4 MB in the beginning and 235.9 MB in the end (delta: 97.5 MB). Free memory was 103.0 MB in the beginning and 205.0 MB in the end (delta: -102.0 MB). Peak memory consumption was 86.5 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:54,680 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 03:19:54,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.71 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 102.6 MB in the beginning and 179.7 MB in the end (delta: -77.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:54,682 INFO L168 Benchmark]: Boogie Preprocessor took 56.45 ms. Allocated memory is still 202.9 MB. Free memory was 179.7 MB in the beginning and 177.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:54,683 INFO L168 Benchmark]: RCFGBuilder took 541.40 ms. Allocated memory is still 202.9 MB. Free memory was 177.0 MB in the beginning and 148.8 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:54,684 INFO L168 Benchmark]: TraceAbstraction took 1122.44 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 148.2 MB in the beginning and 205.0 MB in the end (delta: -56.8 MB). Peak memory consumption was 67.2 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:54,688 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 444.71 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 102.6 MB in the beginning and 179.7 MB in the end (delta: -77.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.45 ms. Allocated memory is still 202.9 MB. Free memory was 179.7 MB in the beginning and 177.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 541.40 ms. Allocated memory is still 202.9 MB. Free memory was 177.0 MB in the beginning and 148.8 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1122.44 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 148.2 MB in the beginning and 205.0 MB in the end (delta: -56.8 MB). Peak memory consumption was 67.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=8589934601, \old(Zero_fmod)=8589934595, \old(Zero_fmod)=8589934600, one_fmod=1, Zero_fmod={3:0}] [L126] float x = 0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=8589934596, Zero_fmod={3:0}] [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=8589934596, one_fmod=1, Zero_fmod={3:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=8589934596, one_fmod=1, x=0, y=8589934596, Zero_fmod={3:0}] [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=8589934596, one_fmod=1, sx=-2, x=0, y=8589934596, Zero_fmod={3:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=8589934596, hx=2139095040, hy=0, one_fmod=1, sx=-2, x=0, y=8589934596, Zero_fmod={3:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=8589934597, one_fmod=1, x=0, y=8589934596, Zero_fmod={3:0}] [L131] float res = fmod_float(x, y); [L134] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, res=8589934597, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=8589934596, Zero_fmod={3:0}] [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L135] __VERIFIER_error() VAL [one_fmod=1, res=8589934597, x=0, y=8589934596, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 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, 918 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...