/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.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:11:41,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:11:41,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:11:41,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:11:41,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:11:41,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:11:41,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:11:41,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:11:41,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:11:41,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:11:41,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:11:41,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:11:41,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:11:41,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:11:41,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:11:41,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:11:41,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:11:41,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:11:41,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:11:41,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:11:41,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:11:41,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:11:41,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:11:41,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:11:41,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:11:41,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:11:41,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:11:41,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:11:41,185 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 [2020-07-19 21:11:41,216 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:11:41,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:11:41,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:11:41,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:11:41,220 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:11:41,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:11:41,220 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:11:41,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:11:41,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:11:41,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:11:41,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:11:41,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:11:41,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:11:41,222 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:11:41,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:11:41,222 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:11:41,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:11:41,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:11:41,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:11:41,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:11:41,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:11:41,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:11:41,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:11:41,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:11:41,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:11:41,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:11:41,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:11:41,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:11:41,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:11:41,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:11:41,489 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:11:41,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:11:41,509 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:11:41,510 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:11:41,511 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:11:41,512 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072a.c [2020-07-19 21:11:41,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/356c6d269/ca18eca2acb846c89531c67364c63707/FLAG9a73337ff [2020-07-19 21:11:42,098 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:11:42,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072a.c [2020-07-19 21:11:42,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/356c6d269/ca18eca2acb846c89531c67364c63707/FLAG9a73337ff [2020-07-19 21:11:42,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/356c6d269/ca18eca2acb846c89531c67364c63707 [2020-07-19 21:11:42,468 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:11:42,471 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:11:42,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:11:42,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:11:42,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:11:42,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:42" (1/1) ... [2020-07-19 21:11:42,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0609b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:42, skipping insertion in model container [2020-07-19 21:11:42,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:42" (1/1) ... [2020-07-19 21:11:42,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:11:42,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:11:42,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:11:42,733 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:11:42,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:11:42,870 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:11:42,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:42 WrapperNode [2020-07-19 21:11:42,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:11:42,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:11:42,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:11:42,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:11:42,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:42" (1/1) ... [2020-07-19 21:11:42,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:42" (1/1) ... [2020-07-19 21:11:42,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:42" (1/1) ... [2020-07-19 21:11:42,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:42" (1/1) ... [2020-07-19 21:11:42,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:42" (1/1) ... [2020-07-19 21:11:42,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:42" (1/1) ... [2020-07-19 21:11:42,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:42" (1/1) ... [2020-07-19 21:11:42,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:11:42,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:11:42,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:11:42,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:11:42,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:42" (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 [2020-07-19 21:11:42,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:11:42,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:11:42,989 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-19 21:11:42,989 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-07-19 21:11:42,989 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-07-19 21:11:42,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:11:42,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:11:42,990 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-19 21:11:42,990 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-07-19 21:11:42,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 21:11:42,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-19 21:11:42,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:11:42,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:11:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:11:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-19 21:11:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-07-19 21:11:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:11:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:11:42,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:11:43,420 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:11:43,420 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-07-19 21:11:43,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:43 BoogieIcfgContainer [2020-07-19 21:11:43,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:11:43,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:11:43,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:11:43,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:11:43,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:11:42" (1/3) ... [2020-07-19 21:11:43,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5974c848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:43, skipping insertion in model container [2020-07-19 21:11:43,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:42" (2/3) ... [2020-07-19 21:11:43,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5974c848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:43, skipping insertion in model container [2020-07-19 21:11:43,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:43" (3/3) ... [2020-07-19 21:11:43,432 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2020-07-19 21:11:43,440 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:11:43,446 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:11:43,459 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:11:43,480 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:11:43,480 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:11:43,480 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:11:43,480 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:11:43,481 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:11:43,481 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:11:43,481 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:11:43,481 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:11:43,496 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-19 21:11:43,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-19 21:11:43,502 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:11:43,503 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] [2020-07-19 21:11:43,503 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:11:43,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:11:43,510 INFO L82 PathProgramCache]: Analyzing trace with hash -48260949, now seen corresponding path program 1 times [2020-07-19 21:11:43,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:11:43,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616772436] [2020-07-19 21:11:43,518 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@463f10e7 [2020-07-19 21:11:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:11:43,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616772436] [2020-07-19 21:11:43,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:11:43,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:11:43,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822706950] [2020-07-19 21:11:43,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:11:43,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:11:43,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:11:43,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:11:43,761 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-07-19 21:11:43,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:11:43,958 INFO L93 Difference]: Finished difference Result 72 states and 101 transitions. [2020-07-19 21:11:43,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:11:43,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-19 21:11:43,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:11:43,971 INFO L225 Difference]: With dead ends: 72 [2020-07-19 21:11:43,971 INFO L226 Difference]: Without dead ends: 36 [2020-07-19 21:11:43,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:11:43,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-19 21:11:44,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-19 21:11:44,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-19 21:11:44,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-07-19 21:11:44,020 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25 [2020-07-19 21:11:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:11:44,020 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-07-19 21:11:44,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:11:44,021 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-07-19 21:11:44,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-19 21:11:44,022 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:11:44,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:11:44,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:11:44,023 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:11:44,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:11:44,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1916763246, now seen corresponding path program 1 times [2020-07-19 21:11:44,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:11:44,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257654555] [2020-07-19 21:11:44,024 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@463f10e7 [2020-07-19 21:11:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:11:44,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:11:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:11:44,325 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:11:44,361 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:11:44,361 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:11:44,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:11:44,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:11:44 BoogieIcfgContainer [2020-07-19 21:11:44,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:11:44,400 INFO L168 Benchmark]: Toolchain (without parser) took 1929.16 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 103.1 MB in the beginning and 96.5 MB in the end (delta: 6.7 MB). Peak memory consumption was 70.6 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:44,401 INFO L168 Benchmark]: CDTParser took 1.14 ms. Allocated memory is still 138.9 MB. Free memory is still 121.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-19 21:11:44,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.68 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 103.1 MB in the beginning and 180.5 MB in the end (delta: -77.3 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:44,403 INFO L168 Benchmark]: Boogie Preprocessor took 50.39 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 178.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:44,403 INFO L168 Benchmark]: RCFGBuilder took 502.66 ms. Allocated memory is still 202.9 MB. Free memory was 178.6 MB in the beginning and 154.2 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:44,404 INFO L168 Benchmark]: TraceAbstraction took 971.74 ms. Allocated memory is still 202.9 MB. Free memory was 153.2 MB in the beginning and 96.5 MB in the end (delta: 56.8 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:44,408 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.14 ms. Allocated memory is still 138.9 MB. Free memory is still 121.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 395.68 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 103.1 MB in the beginning and 180.5 MB in the end (delta: -77.3 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.39 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 178.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 502.66 ms. Allocated memory is still 202.9 MB. Free memory was 178.6 MB in the beginning and 154.2 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 971.74 ms. Allocated memory is still 202.9 MB. Free memory was 153.2 MB in the beginning and 96.5 MB in the end (delta: 56.8 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 89]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 72, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 71. Possible FailurePath: [L84] double x = 1.0 / 0.0; [L85] CALL, EXPR trunc_double(x) VAL [\old(x)=8589934593] [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; VAL [\old(x)=8589934593, x=8589934593] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=8589934593, exponent_less_1023=1024, lsw=11, msw=0, signbit=-2, x=8589934593] [L30] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=8589934593, exponent_less_1023=1024, lsw=11, msw=0, signbit=-2, x=8589934593] [L47] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=8589934593, exponent_less_1023=1024, lsw=11, msw=0, signbit=-2, x=8589934593] [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; VAL [\old(x)=8589934593, exponent_less_1023=1024, lsw=11, msw=0, signbit=-2, x=8589934593] [L85] RET, EXPR trunc_double(x) VAL [trunc_double(x)=8589934596, x=8589934593] [L85] double res = trunc_double(x); [L88] CALL, EXPR isinf_double(res) VAL [\old(x)=8589934596] [L64] __int32_t hx, lx; VAL [\old(x)=8589934596, x=8589934596] [L66] ieee_double_shape_type ew_u; [L67] ew_u.value = (x) [L68] EXPR ew_u.parts.msw [L68] (hx) = ew_u.parts.msw [L69] EXPR ew_u.parts.lsw [L69] (lx) = ew_u.parts.lsw [L71] hx &= 0x7fffffff [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L73] hx = 0x7ff00000 - hx [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=8589934596, \result=0, hx=2146435072, lx=0, x=8589934596] [L88] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, res=8589934596, x=8589934593] [L88] COND TRUE !isinf_double(res) [L89] __VERIFIER_error() VAL [res=8589934596, x=8589934593] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 30 SDslu, 5 SDs, 0 SdLazy, 44 SolverSat, 13 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1368 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...