/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 NUM_VARIABLES --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_1052b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:10:38,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:10:38,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:10:38,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:10:38,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:10:38,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:10:38,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:10:38,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:10:38,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:10:38,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:10:38,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:10:38,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:10:38,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:10:38,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:10:38,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:10:38,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:10:38,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:10:38,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:10:38,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:10:38,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:10:38,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:10:38,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:10:38,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:10:38,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:10:38,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:10:38,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:10:38,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:10:38,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:10:38,359 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 01:10:38,394 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:10:38,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:10:38,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:10:38,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:10:38,398 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:10:38,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:10:38,398 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:10:38,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:10:38,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:10:38,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:10:38,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:10:38,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:10:38,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:10:38,400 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:10:38,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:10:38,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:10:38,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:10:38,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:10:38,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:10:38,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:10:38,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:10:38,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:10:38,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:10:38,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:10:38,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:10:38,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:10:38,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:10:38,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:10:38,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:10:38,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES 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 01:10:38,706 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:10:38,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:10:38,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:10:38,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:10:38,728 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:10:38,728 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052b.c [2020-07-20 01:10:38,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e551f900f/f72535ed48b540699270740a64e6b926/FLAG9291471aa [2020-07-20 01:10:39,324 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:10:39,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1052b.c [2020-07-20 01:10:39,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e551f900f/f72535ed48b540699270740a64e6b926/FLAG9291471aa [2020-07-20 01:10:39,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e551f900f/f72535ed48b540699270740a64e6b926 [2020-07-20 01:10:39,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:10:39,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:10:39,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:10:39,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:10:39,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:10:39,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:10:39" (1/1) ... [2020-07-20 01:10:39,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e2ddbcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:39, skipping insertion in model container [2020-07-20 01:10:39,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:10:39" (1/1) ... [2020-07-20 01:10:39,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:10:39,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:10:39,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:10:39,993 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:10:40,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:10:40,196 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:10:40,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:40 WrapperNode [2020-07-20 01:10:40,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:10:40,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:10:40,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:10:40,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:10:40,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:40" (1/1) ... [2020-07-20 01:10:40,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:40" (1/1) ... [2020-07-20 01:10:40,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:40" (1/1) ... [2020-07-20 01:10:40,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:40" (1/1) ... [2020-07-20 01:10:40,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:40" (1/1) ... [2020-07-20 01:10:40,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:40" (1/1) ... [2020-07-20 01:10:40,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:40" (1/1) ... [2020-07-20 01:10:40,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:10:40,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:10:40,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:10:40,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:10:40,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:40" (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 01:10:40,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:10:40,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:10:40,350 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-07-20 01:10:40,351 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-07-20 01:10:40,352 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:10:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:10:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-07-20 01:10:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 01:10:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 01:10:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 01:10:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 01:10:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 01:10:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 01:10:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-07-20 01:10:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:10:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:10:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:10:40,679 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:10:40,679 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-20 01:10:40,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:10:40 BoogieIcfgContainer [2020-07-20 01:10:40,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:10:40,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:10:40,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:10:40,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:10:40,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:10:39" (1/3) ... [2020-07-20 01:10:40,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f00692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:10:40, skipping insertion in model container [2020-07-20 01:10:40,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:40" (2/3) ... [2020-07-20 01:10:40,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f00692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:10:40, skipping insertion in model container [2020-07-20 01:10:40,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:10:40" (3/3) ... [2020-07-20 01:10:40,694 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052b.c [2020-07-20 01:10:40,707 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:10:40,716 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:10:40,748 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:10:40,780 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:10:40,780 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:10:40,780 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:10:40,780 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:10:40,780 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:10:40,781 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:10:40,781 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:10:40,781 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:10:40,801 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-20 01:10:40,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 01:10:40,808 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:10:40,809 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] [2020-07-20 01:10:40,809 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:10:40,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:10:40,815 INFO L82 PathProgramCache]: Analyzing trace with hash -305625155, now seen corresponding path program 1 times [2020-07-20 01:10:40,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:10:40,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165804322] [2020-07-20 01:10:40,823 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@226ed881 [2020-07-20 01:10:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:41,151 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 01:10:41,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165804322] [2020-07-20 01:10:41,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:10:41,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:10:41,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232978390] [2020-07-20 01:10:41,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:10:41,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:10:41,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:10:41,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:10:41,195 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-07-20 01:10:41,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:10:41,431 INFO L93 Difference]: Finished difference Result 76 states and 107 transitions. [2020-07-20 01:10:41,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:10:41,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-20 01:10:41,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:10:41,445 INFO L225 Difference]: With dead ends: 76 [2020-07-20 01:10:41,445 INFO L226 Difference]: Without dead ends: 38 [2020-07-20 01:10:41,449 INFO L675 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 [2020-07-20 01:10:41,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-20 01:10:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-07-20 01:10:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-20 01:10:41,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-07-20 01:10:41,496 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2020-07-20 01:10:41,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:10:41,497 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-07-20 01:10:41,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:10:41,497 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-07-20 01:10:41,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 01:10:41,498 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:10:41,499 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] [2020-07-20 01:10:41,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:10:41,499 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:10:41,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:10:41,500 INFO L82 PathProgramCache]: Analyzing trace with hash -231212118, now seen corresponding path program 1 times [2020-07-20 01:10:41,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:10:41,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716888010] [2020-07-20 01:10:41,501 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@226ed881 [2020-07-20 01:10:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:10:41,641 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:10:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:10:41,761 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:10:41,814 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 01:10:41,815 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 01:10:41,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:10:41,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:10:41 BoogieIcfgContainer [2020-07-20 01:10:41,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:10:41,878 INFO L168 Benchmark]: Toolchain (without parser) took 2141.17 ms. Allocated memory was 148.4 MB in the beginning and 207.6 MB in the end (delta: 59.2 MB). Free memory was 106.2 MB in the beginning and 107.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:41,879 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 124.5 MB in the beginning and 124.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 01:10:41,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 460.09 ms. Allocated memory was 148.4 MB in the beginning and 207.6 MB in the end (delta: 59.2 MB). Free memory was 105.8 MB in the beginning and 185.8 MB in the end (delta: -80.0 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:41,881 INFO L168 Benchmark]: Boogie Preprocessor took 83.63 ms. Allocated memory is still 207.6 MB. Free memory was 185.8 MB in the beginning and 183.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:41,882 INFO L168 Benchmark]: RCFGBuilder took 399.79 ms. Allocated memory is still 207.6 MB. Free memory was 183.2 MB in the beginning and 163.0 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:41,883 INFO L168 Benchmark]: TraceAbstraction took 1189.48 ms. Allocated memory is still 207.6 MB. Free memory was 162.3 MB in the beginning and 107.6 MB in the end (delta: 54.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:41,887 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 124.5 MB in the beginning and 124.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 460.09 ms. Allocated memory was 148.4 MB in the beginning and 207.6 MB in the end (delta: 59.2 MB). Free memory was 105.8 MB in the beginning and 185.8 MB in the end (delta: -80.0 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.63 ms. Allocated memory is still 207.6 MB. Free memory was 185.8 MB in the beginning and 183.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.79 ms. Allocated memory is still 207.6 MB. Free memory was 183.2 MB in the beginning and 163.0 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1189.48 ms. Allocated memory is still 207.6 MB. Free memory was 162.3 MB in the beginning and 107.6 MB in the end (delta: 54.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 64. Possible FailurePath: [L11] static const float huge_floor = 1.0e30; VAL [\old(huge_floor)=1000000000000000000000000000005, huge_floor=1000000000000000000000000000000] [L75] float x = -1.0f / 0.0f; VAL [huge_floor=1000000000000000000000000000000] [L76] CALL, EXPR floor_float(x) VAL [\old(x)=1000000000000000000000000000009, huge_floor=1000000000000000000000000000000] [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; VAL [\old(x)=1000000000000000000000000000009, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000009] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f VAL [\old(x)=1000000000000000000000000000009, huge_floor=1000000000000000000000000000000, i=18014396353609728, i0=0, j0=2147483264, x=1000000000000000000000000000009] [L23] COND FALSE !(j0 < 23) VAL [\old(x)=1000000000000000000000000000009, huge_floor=1000000000000000000000000000000, i=18014396353609728, i0=0, j0=2147483264, x=1000000000000000000000000000009] [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; VAL [\old(x)=1000000000000000000000000000009, huge_floor=1000000000000000000000000000000, i=18014396353609728, i0=0, j0=2147483264, x=1000000000000000000000000000009] [L76] RET, EXPR floor_float(x) VAL [floor_float(x)=1000000000000000000000000000002, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000009] [L76] float res = floor_float(x); [L79] CALL, EXPR isinf_float(res) VAL [\old(x)=1000000000000000000000000000002, huge_floor=1000000000000000000000000000000] [L58] __int32_t ix; VAL [\old(x)=1000000000000000000000000000002, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000002] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (ix) = gf_u.word [L64] ix &= 0x7fffffff [L65] return ((ix) == 0x7f800000L); VAL [\old(x)=1000000000000000000000000000002, \result=0, huge_floor=1000000000000000000000000000000, ix=0, x=1000000000000000000000000000002] [L79] RET, EXPR isinf_float(res) VAL [huge_floor=1000000000000000000000000000000, isinf_float(res)=0, res=1000000000000000000000000000002, x=1000000000000000000000000000009] [L79] COND TRUE !isinf_float(res) [L80] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000, res=1000000000000000000000000000002, x=1000000000000000000000000000009] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 39 SDslu, 5 SDs, 0 SdLazy, 49 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1357 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...