/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 00:32:26,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 00:32:26,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 00:32:27,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 00:32:27,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 00:32:27,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 00:32:27,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 00:32:27,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 00:32:27,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 00:32:27,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 00:32:27,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 00:32:27,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 00:32:27,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 00:32:27,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 00:32:27,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 00:32:27,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 00:32:27,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 00:32:27,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 00:32:27,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 00:32:27,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 00:32:27,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 00:32:27,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 00:32:27,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 00:32:27,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 00:32:27,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 00:32:27,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 00:32:27,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 00:32:27,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 00:32:27,088 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 00:32:27,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 00:32:27,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 00:32:27,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 00:32:27,116 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 00:32:27,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 00:32:27,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 00:32:27,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 00:32:27,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 00:32:27,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 00:32:27,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 00:32:27,119 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 00:32:27,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 00:32:27,119 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 00:32:27,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 00:32:27,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 00:32:27,120 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 00:32:27,120 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 00:32:27,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 00:32:27,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:32:27,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 00:32:27,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 00:32:27,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 00:32:27,121 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 00:32:27,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 00:32:27,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 00:32:27,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 00:32:27,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 00:32:27,536 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 00:32:27,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072b.c [2020-10-24 00:32:27,625 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae5aeff7/e634a1e5b1a34d25a1610b0b518017e8/FLAG647ceffbf [2020-10-24 00:32:28,346 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 00:32:28,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072b.c [2020-10-24 00:32:28,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae5aeff7/e634a1e5b1a34d25a1610b0b518017e8/FLAG647ceffbf [2020-10-24 00:32:28,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae5aeff7/e634a1e5b1a34d25a1610b0b518017e8 [2020-10-24 00:32:28,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 00:32:28,693 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 00:32:28,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 00:32:28,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 00:32:28,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 00:32:28,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:32:28" (1/1) ... [2020-10-24 00:32:28,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da179a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:28, skipping insertion in model container [2020-10-24 00:32:28,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:32:28" (1/1) ... [2020-10-24 00:32:28,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 00:32:28,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 00:32:28,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:32:28,922 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 00:32:28,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:32:28,971 INFO L208 MainTranslator]: Completed translation [2020-10-24 00:32:28,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:28 WrapperNode [2020-10-24 00:32:28,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 00:32:28,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 00:32:28,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 00:32:28,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 00:32:28,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:28" (1/1) ... [2020-10-24 00:32:28,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:28" (1/1) ... [2020-10-24 00:32:28,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:28" (1/1) ... [2020-10-24 00:32:28,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:28" (1/1) ... [2020-10-24 00:32:29,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:28" (1/1) ... [2020-10-24 00:32:29,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:28" (1/1) ... [2020-10-24 00:32:29,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:28" (1/1) ... [2020-10-24 00:32:29,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 00:32:29,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 00:32:29,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 00:32:29,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 00:32:29,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:28" (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 [2020-10-24 00:32:29,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 00:32:29,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 00:32:29,114 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 00:32:29,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-24 00:32:29,114 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-10-24 00:32:29,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-24 00:32:29,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 00:32:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 00:32:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 00:32:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 00:32:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 00:32:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-24 00:32:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-10-24 00:32:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 00:32:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 00:32:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 00:32:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 00:32:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 00:32:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-24 00:32:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 00:32:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 00:32:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 00:32:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 00:32:29,682 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 00:32:29,682 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-24 00:32:29,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:32:29 BoogieIcfgContainer [2020-10-24 00:32:29,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 00:32:29,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 00:32:29,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 00:32:29,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 00:32:29,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:32:28" (1/3) ... [2020-10-24 00:32:29,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0639ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:32:29, skipping insertion in model container [2020-10-24 00:32:29,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:28" (2/3) ... [2020-10-24 00:32:29,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0639ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:32:29, skipping insertion in model container [2020-10-24 00:32:29,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:32:29" (3/3) ... [2020-10-24 00:32:29,694 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072b.c [2020-10-24 00:32:29,706 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 00:32:29,711 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 00:32:29,725 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 00:32:29,749 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 00:32:29,749 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 00:32:29,749 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 00:32:29,750 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 00:32:29,750 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 00:32:29,750 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 00:32:29,750 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 00:32:29,750 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 00:32:29,769 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-10-24 00:32:29,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-24 00:32:29,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:32:29,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:32:29,782 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:32:29,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:32:29,793 INFO L82 PathProgramCache]: Analyzing trace with hash -247968084, now seen corresponding path program 1 times [2020-10-24 00:32:29,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:32:29,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967146501] [2020-10-24 00:32:29,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:32:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:30,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:32:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:30,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:32:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:32:30,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967146501] [2020-10-24 00:32:30,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:32:30,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:32:30,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366473243] [2020-10-24 00:32:30,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:32:30,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:32:30,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:32:30,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:32:30,113 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 4 states. [2020-10-24 00:32:30,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:32:30,502 INFO L93 Difference]: Finished difference Result 214 states and 246 transitions. [2020-10-24 00:32:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:32:30,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-24 00:32:30,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:32:30,516 INFO L225 Difference]: With dead ends: 214 [2020-10-24 00:32:30,516 INFO L226 Difference]: Without dead ends: 108 [2020-10-24 00:32:30,521 INFO L677 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 [2020-10-24 00:32:30,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-24 00:32:30,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-24 00:32:30,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-24 00:32:30,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2020-10-24 00:32:30,586 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 37 [2020-10-24 00:32:30,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:32:30,586 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2020-10-24 00:32:30,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:32:30,587 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2020-10-24 00:32:30,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-24 00:32:30,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:32:30,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:32:30,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 00:32:30,590 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:32:30,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:32:30,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1570660401, now seen corresponding path program 1 times [2020-10-24 00:32:30,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:32:30,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490320955] [2020-10-24 00:32:30,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:32:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:32:30,731 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:32:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:32:30,779 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:32:30,819 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 00:32:30,819 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 00:32:30,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 00:32:30,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:32:30 BoogieIcfgContainer [2020-10-24 00:32:30,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 00:32:30,909 INFO L168 Benchmark]: Toolchain (without parser) took 2219.27 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 131.5 MB in the beginning and 136.2 MB in the end (delta: -4.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:30,909 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 00:32:30,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.93 ms. Allocated memory is still 155.2 MB. Free memory was 130.9 MB in the beginning and 120.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:30,911 INFO L168 Benchmark]: Boogie Preprocessor took 57.20 ms. Allocated memory is still 155.2 MB. Free memory was 120.2 MB in the beginning and 118.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:30,912 INFO L168 Benchmark]: RCFGBuilder took 653.44 ms. Allocated memory is still 155.2 MB. Free memory was 118.3 MB in the beginning and 124.8 MB in the end (delta: -6.5 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:30,913 INFO L168 Benchmark]: TraceAbstraction took 1219.42 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 124.2 MB in the beginning and 136.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 19.5 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:30,917 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 155.2 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.93 ms. Allocated memory is still 155.2 MB. Free memory was 130.9 MB in the beginning and 120.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.20 ms. Allocated memory is still 155.2 MB. Free memory was 120.2 MB in the beginning and 118.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 653.44 ms. Allocated memory is still 155.2 MB. Free memory was 118.3 MB in the beginning and 124.8 MB in the end (delta: -6.5 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1219.42 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 124.2 MB in the beginning and 136.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 19.5 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 someBinaryDOUBLEComparisonOperation at line 87, overapproximation of bitwiseAnd at line 31, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51. Possible FailurePath: [L83] double x = 0.0; VAL [x=0] [L84] CALL, EXPR trunc_double(x) VAL [\old(x)=0] [L20] int signbit; VAL [\old(x)=0, x=0] [L21] int msw; VAL [\old(x)=0, x=0] [L22] unsigned int lsw; VAL [\old(x)=0, x=0] [L23] int exponent_less_1023; VAL [\old(x)=0, x=0] [L25] ieee_double_shape_type ew_u; VAL [\old(x)=0, ew_u={3:0}, x=0] [L26] ew_u.value = (x) VAL [\old(x)=0, ew_u={3:0}, x=0] [L27] EXPR ew_u.parts.msw VAL [\old(x)=0, ew_u={3:0}, ew_u.parts.msw=4294967294, x=0] [L27] (msw) = ew_u.parts.msw VAL [\old(x)=0, ew_u={3:0}, ew_u.parts.msw=4294967294, msw=-2, x=0] [L28] EXPR ew_u.parts.lsw VAL [\old(x)=0, ew_u={3:0}, ew_u.parts.lsw=4294967300, msw=-2, x=0] [L28] (lsw) = ew_u.parts.lsw VAL [\old(x)=0, ew_u={3:0}, ew_u.parts.lsw=4294967300, lsw=4, msw=-2, x=0] [L30] signbit = msw & 0x80000000 VAL [\old(x)=0, lsw=4, msw=-2, signbit=-1, x=0] [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=0, exponent_less_1023=1024, lsw=4, msw=-2, signbit=-1, x=0] [L32] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=0, exponent_less_1023=1024, lsw=4, msw=-2, signbit=-1, x=0] [L49] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=0, exponent_less_1023=1024, lsw=4, msw=-2, signbit=-1, x=0] [L50] COND TRUE exponent_less_1023 == 1024 VAL [\old(x)=0, exponent_less_1023=1024, lsw=4, msw=-2, signbit=-1, x=0] [L51] return x + x; VAL [\old(x)=0, exponent_less_1023=1024, lsw=4, msw=-2, signbit=-1, x=0] [L84] RET, EXPR trunc_double(x) VAL [trunc_double(x)=4294967309, x=0] [L84] double res = trunc_double(x); VAL [res=4294967309, trunc_double(x)=4294967309, x=0] [L87] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=4294967309, res == 0.0 && __signbit_double(res) == 0=0, x=0] [L87] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) VAL [res=4294967309, res == 0.0 && __signbit_double(res) == 0=0, x=0] [L88] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1072b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 122 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 116 SDtfs, 19 SDslu, 68 SDs, 0 SdLazy, 144 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=118occurred 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, 0.1s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 2808 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...