/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_1011a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:11:28,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:11:28,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:11:28,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:11:28,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:11:28,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:11:28,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:11:28,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:11:28,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:11:28,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:11:28,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:11:28,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:11:28,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:11:28,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:11:28,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:11:28,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:11:28,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:11:28,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:11:28,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:11:28,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:11:28,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:11:28,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:11:28,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:11:28,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:11:28,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:11:28,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:11:28,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:11:28,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:11:28,086 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 21:11:28,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:11:28,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:11:28,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:11:28,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:11:28,115 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:11:28,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:11:28,115 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:11:28,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:11:28,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:11:28,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:11:28,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:11:28,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:11:28,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:11:28,117 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:11:28,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:11:28,118 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:11:28,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:11:28,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:11:28,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:11:28,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:11:28,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:11:28,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:11:28,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:11:28,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:11:28,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:11:28,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:11:28,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:11:28,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:11:28,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:11:28,121 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 21:11:28,376 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:11:28,388 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:11:28,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:11:28,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:11:28,393 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:11:28,394 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011a.c [2020-07-19 21:11:28,458 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73b4b992f/0f6818a2848b4f9094e8e7b65df65dec/FLAGda0afbab7 [2020-07-19 21:11:28,874 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:11:28,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1011a.c [2020-07-19 21:11:28,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73b4b992f/0f6818a2848b4f9094e8e7b65df65dec/FLAGda0afbab7 [2020-07-19 21:11:29,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73b4b992f/0f6818a2848b4f9094e8e7b65df65dec [2020-07-19 21:11:29,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:11:29,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:11:29,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:11:29,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:11:29,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:11:29,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:29" (1/1) ... [2020-07-19 21:11:29,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69a8e976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:29, skipping insertion in model container [2020-07-19 21:11:29,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:29" (1/1) ... [2020-07-19 21:11:29,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:11:29,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:11:29,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:11:29,487 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:11:29,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:11:29,525 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:11:29,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:29 WrapperNode [2020-07-19 21:11:29,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:11:29,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:11:29,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:11:29,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:11:29,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:29" (1/1) ... [2020-07-19 21:11:29,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:29" (1/1) ... [2020-07-19 21:11:29,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:29" (1/1) ... [2020-07-19 21:11:29,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:29" (1/1) ... [2020-07-19 21:11:29,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:29" (1/1) ... [2020-07-19 21:11:29,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:29" (1/1) ... [2020-07-19 21:11:29,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:29" (1/1) ... [2020-07-19 21:11:29,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:11:29,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:11:29,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:11:29,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:11:29,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:29" (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 21:11:29,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:11:29,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:11:29,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-19 21:11:29,711 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-07-19 21:11:29,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:11:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:11:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-19 21:11:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 21:11:29,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-19 21:11:29,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:11:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:11:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-07-19 21:11:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:11:29,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-19 21:11:29,714 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:11:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:11:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:11:29,961 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:11:29,961 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-19 21:11:29,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:29 BoogieIcfgContainer [2020-07-19 21:11:29,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:11:29,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:11:29,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:11:29,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:11:29,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:11:29" (1/3) ... [2020-07-19 21:11:29,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b64c0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:29, skipping insertion in model container [2020-07-19 21:11:29,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:29" (2/3) ... [2020-07-19 21:11:29,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b64c0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:29, skipping insertion in model container [2020-07-19 21:11:29,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:29" (3/3) ... [2020-07-19 21:11:29,973 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1011a.c [2020-07-19 21:11:29,983 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:11:29,994 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:11:30,010 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:11:30,039 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:11:30,039 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:11:30,040 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:11:30,040 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:11:30,040 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:11:30,040 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:11:30,040 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:11:30,041 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:11:30,068 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-07-19 21:11:30,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-19 21:11:30,079 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:11:30,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:11:30,081 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:11:30,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:11:30,089 INFO L82 PathProgramCache]: Analyzing trace with hash -2010282984, now seen corresponding path program 1 times [2020-07-19 21:11:30,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:11:30,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047479765] [2020-07-19 21:11:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7bb8a423 [2020-07-19 21:11:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:30,306 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 21:11:30,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047479765] [2020-07-19 21:11:30,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:11:30,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:11:30,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860657980] [2020-07-19 21:11:30,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:11:30,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:11:30,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:11:30,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:11:30,333 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2020-07-19 21:11:30,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:11:30,482 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-07-19 21:11:30,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:11:30,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-07-19 21:11:30,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:11:30,493 INFO L225 Difference]: With dead ends: 56 [2020-07-19 21:11:30,493 INFO L226 Difference]: Without dead ends: 28 [2020-07-19 21:11:30,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 21:11:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-19 21:11:30,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-07-19 21:11:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-19 21:11:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-07-19 21:11:30,536 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 17 [2020-07-19 21:11:30,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:11:30,537 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-07-19 21:11:30,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:11:30,537 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-07-19 21:11:30,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-19 21:11:30,538 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:11:30,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:11:30,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:11:30,539 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:11:30,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:11:30,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1410255941, now seen corresponding path program 1 times [2020-07-19 21:11:30,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:11:30,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201164497] [2020-07-19 21:11:30,541 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7bb8a423 [2020-07-19 21:11:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:11:30,585 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:11:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:11:30,612 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:11:30,638 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:11:30,639 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:11:30,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:11:30,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:11:30 BoogieIcfgContainer [2020-07-19 21:11:30,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:11:30,672 INFO L168 Benchmark]: Toolchain (without parser) took 1387.23 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 103.3 MB in the beginning and 122.1 MB in the end (delta: -18.8 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:30,673 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.3 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 21:11:30,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.10 ms. Allocated memory is still 146.3 MB. Free memory was 102.9 MB in the beginning and 91.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:30,675 INFO L168 Benchmark]: Boogie Preprocessor took 122.91 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 91.9 MB in the beginning and 180.9 MB in the end (delta: -89.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:30,676 INFO L168 Benchmark]: RCFGBuilder took 315.40 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 162.9 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:30,677 INFO L168 Benchmark]: TraceAbstraction took 702.46 ms. Allocated memory is still 203.4 MB. Free memory was 162.2 MB in the beginning and 122.1 MB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:30,681 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 146.3 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 241.10 ms. Allocated memory is still 146.3 MB. Free memory was 102.9 MB in the beginning and 91.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.91 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 91.9 MB in the beginning and 180.9 MB in the end (delta: -89.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 315.40 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 162.9 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 702.46 ms. Allocated memory is still 203.4 MB. Free memory was 162.2 MB in the beginning and 122.1 MB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 52]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 51, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L47] double x = 0.0; VAL [x=0] [L48] CALL, EXPR fabs_double(x) VAL [\old(x)=0] [L26] __uint32_t high; VAL [\old(x)=0, x=0] [L28] ieee_double_shape_type gh_u; [L29] gh_u.value = (x) [L30] EXPR gh_u.parts.msw [L30] (high) = gh_u.parts.msw [L33] ieee_double_shape_type sh_u; [L34] sh_u.value = (x) [L35] sh_u.parts.msw = (high & 0x7fffffff) [L36] EXPR sh_u.value [L36] (x) = sh_u.value [L38] return x; VAL [\old(x)=0, \result=0, high=21, x=0] [L48] RET, EXPR fabs_double(x) VAL [fabs_double(x)=0, x=0] [L48] double res = fabs_double(x); [L51] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=0] [L51] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L52] __VERIFIER_error() VAL [res=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 21 SDslu, 5 SDs, 0 SdLazy, 31 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 592 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...