/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:57:15,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:57:15,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:57:15,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-06 21:57:15,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:57:15,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:57:15,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:57:15,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:57:15,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:57:15,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:57:15,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:57:15,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:57:15,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:57:15,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:57:15,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:57:15,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:57:15,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 21:57:15,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:57:15,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:57:15,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:57:15,185 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 [2020-11-06 21:57:15,211 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:57:15,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:57:15,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:57:15,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:57:15,214 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:57:15,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:57:15,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:57:15,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:57:15,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:57:15,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:57:15,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:57:15,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:57:15,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:57:15,216 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:57:15,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:57:15,217 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:57:15,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:57:15,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:57:15,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:57:15,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:57:15,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:57:15,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:57:15,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:57:15,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:57:15,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:57:15,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:57:15,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:57:15,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:57:15,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:57:15,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:57:15,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:57:15,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:57:15,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:57:15,616 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:57:15,616 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:57:15,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-11-06 21:57:15,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63ce7740/c5aa328e20b04946a2a643caf218d54c/FLAG0c69a9f26 [2020-11-06 21:57:16,465 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:57:16,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-11-06 21:57:16,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63ce7740/c5aa328e20b04946a2a643caf218d54c/FLAG0c69a9f26 [2020-11-06 21:57:16,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63ce7740/c5aa328e20b04946a2a643caf218d54c [2020-11-06 21:57:16,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:57:16,790 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:57:16,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:16,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:57:16,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:57:16,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:16" (1/1) ... [2020-11-06 21:57:16,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b1b9a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:16, skipping insertion in model container [2020-11-06 21:57:16,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:16" (1/1) ... [2020-11-06 21:57:16,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:57:16,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:57:17,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:17,025 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:57:17,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:17,083 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:57:17,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17 WrapperNode [2020-11-06 21:57:17,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:17,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:57:17,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:57:17,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:57:17,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (1/1) ... [2020-11-06 21:57:17,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (1/1) ... [2020-11-06 21:57:17,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (1/1) ... [2020-11-06 21:57:17,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (1/1) ... [2020-11-06 21:57:17,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (1/1) ... [2020-11-06 21:57:17,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (1/1) ... [2020-11-06 21:57:17,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (1/1) ... [2020-11-06 21:57:17,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:57:17,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:57:17,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:57:17,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:57:17,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (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 [2020-11-06 21:57:17,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:57:17,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:57:17,236 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:57:17,237 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-11-06 21:57:17,237 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-11-06 21:57:17,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:57:17,238 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:57:17,238 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:57:17,238 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:57:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:57:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-11-06 21:57:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-06 21:57:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:57:17,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:57:17,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:57:17,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-06 21:57:17,243 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-11-06 21:57:17,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:57:17,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:57:17,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:57:17,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:57:17,967 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:57:17,967 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-06 21:57:17,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:17 BoogieIcfgContainer [2020-11-06 21:57:17,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:57:17,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:57:17,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:57:17,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:57:17,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:16" (1/3) ... [2020-11-06 21:57:17,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f94d948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:17, skipping insertion in model container [2020-11-06 21:57:17,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (2/3) ... [2020-11-06 21:57:17,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f94d948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:17, skipping insertion in model container [2020-11-06 21:57:17,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:17" (3/3) ... [2020-11-06 21:57:17,983 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-11-06 21:57:18,004 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:57:18,008 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:57:18,022 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:57:18,066 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:57:18,066 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:57:18,066 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:57:18,066 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:57:18,067 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:57:18,067 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:57:18,067 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:57:18,067 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:57:18,086 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-11-06 21:57:18,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-06 21:57:18,093 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:18,094 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] [2020-11-06 21:57:18,095 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:18,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:18,102 INFO L82 PathProgramCache]: Analyzing trace with hash -656922523, now seen corresponding path program 1 times [2020-11-06 21:57:18,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:18,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399369340] [2020-11-06 21:57:18,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:18,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:57:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:18,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 21:57:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:18,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:57:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:57:18,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399369340] [2020-11-06 21:57:18,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:57:18,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:57:18,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235862302] [2020-11-06 21:57:18,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:57:18,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:57:18,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:57:18,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:57:18,473 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-11-06 21:57:18,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:57:18,777 INFO L93 Difference]: Finished difference Result 81 states and 111 transitions. [2020-11-06 21:57:18,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 21:57:18,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-06 21:57:18,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:57:18,790 INFO L225 Difference]: With dead ends: 81 [2020-11-06 21:57:18,790 INFO L226 Difference]: Without dead ends: 39 [2020-11-06 21:57:18,794 INFO L677 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 [2020-11-06 21:57:18,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-06 21:57:18,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-06 21:57:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-06 21:57:18,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-11-06 21:57:18,844 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 26 [2020-11-06 21:57:18,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:57:18,845 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-11-06 21:57:18,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:57:18,845 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-11-06 21:57:18,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-06 21:57:18,846 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:18,846 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, 1] [2020-11-06 21:57:18,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:57:18,847 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:18,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:18,848 INFO L82 PathProgramCache]: Analyzing trace with hash 373305178, now seen corresponding path program 1 times [2020-11-06 21:57:18,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:18,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335906227] [2020-11-06 21:57:18,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:19,005 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:19,155 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:19,217 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:57:19,218 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:57:19,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 21:57:19,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:57:19 BoogieIcfgContainer [2020-11-06 21:57:19,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:57:19,297 INFO L168 Benchmark]: Toolchain (without parser) took 2508.32 ms. Allocated memory is still 161.5 MB. Free memory was 136.9 MB in the beginning and 77.4 MB in the end (delta: 59.5 MB). Peak memory consumption was 60.6 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:19,298 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 134.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:57:19,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.15 ms. Allocated memory is still 161.5 MB. Free memory was 136.1 MB in the beginning and 125.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:19,302 INFO L168 Benchmark]: Boogie Preprocessor took 54.95 ms. Allocated memory is still 161.5 MB. Free memory was 125.0 MB in the beginning and 123.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:19,303 INFO L168 Benchmark]: RCFGBuilder took 829.23 ms. Allocated memory is still 161.5 MB. Free memory was 123.0 MB in the beginning and 132.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:19,305 INFO L168 Benchmark]: TraceAbstraction took 1317.04 ms. Allocated memory is still 161.5 MB. Free memory was 132.9 MB in the beginning and 77.4 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:19,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 134.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 293.15 ms. Allocated memory is still 161.5 MB. Free memory was 136.1 MB in the beginning and 125.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.95 ms. Allocated memory is still 161.5 MB. Free memory was 125.0 MB in the beginning and 123.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 829.23 ms. Allocated memory is still 161.5 MB. Free memory was 123.0 MB in the beginning and 132.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1317.04 ms. Allocated memory is still 161.5 MB. Free memory was 132.9 MB in the beginning and 77.4 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 33, overapproximation of bitwiseOr at line 75, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 74. Possible FailurePath: [L88] double x = 1.0 / 0.0; [L89] CALL, EXPR round_double(x) VAL [\old(x)=8589934601] [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; VAL [\old(x)=8589934601, x=8589934601] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=8589934601, exponent_less_1023=0, lsw=0, msw=0, x=8589934601] [L26] COND TRUE exponent_less_1023 < 20 VAL [\old(x)=8589934601, exponent_less_1023=0, lsw=0, msw=0, x=8589934601] [L27] COND FALSE !(exponent_less_1023 < 0) [L33] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; VAL [\old(x)=8589934601, exponent_less_1023=0, lsw=0, msw=0, x=8589934601] [L34] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L35] return x; VAL [\old(x)=8589934601, \result=8589934601, exponent_less_1023=0, lsw=0, msw=0, x=8589934601] [L89] RET, EXPR round_double(x) VAL [round_double(x)=8589934601, x=8589934601] [L89] double res = round_double(x); [L92] CALL, EXPR isinf_double(res) VAL [\old(x)=8589934601] [L67] __int32_t hx, lx; VAL [\old(x)=8589934601, x=8589934601] [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=8589934601, \result=0, hx=2146435072, lx=-2, x=8589934601] [L92] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, res=8589934601, x=8589934601] [L92] COND TRUE !isinf_double(res) [L93] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1032c.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 8 SDslu, 40 SDs, 0 SdLazy, 45 SolverSat, 8 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=46occurred 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, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 1975 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...