/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1211a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:32:36,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:32:36,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:32:36,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:32:36,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:32:36,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:32:36,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:32:36,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:32:36,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:32:36,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:32:36,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:32:36,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:32:36,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:32:36,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:32:36,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:32:36,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:32:36,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:32:36,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:32:36,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:32:36,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:32:36,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:32:36,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:32:36,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:32:36,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:32:36,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:32:36,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:32:36,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:32:36,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:32:36,764 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:32:36,778 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:32:36,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:32:36,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:32:36,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:32:36,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:32:36,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:32:36,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:32:36,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:32:36,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:32:36,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:32:36,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:32:36,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:32:36,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:32:36,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:32:36,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:32:36,783 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:32:36,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:32:36,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:32:36,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:32:36,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:32:36,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:32:36,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:32:36,785 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:32:37,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:32:37,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:32:37,104 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:32:37,105 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:32:37,106 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:32:37,107 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1211a.c [2020-08-22 18:32:37,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64b9fe319/92199f7a71f54345bc10539cc0ea95a4/FLAG2c2e8a6af [2020-08-22 18:32:37,619 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:32:37,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1211a.c [2020-08-22 18:32:37,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64b9fe319/92199f7a71f54345bc10539cc0ea95a4/FLAG2c2e8a6af [2020-08-22 18:32:37,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64b9fe319/92199f7a71f54345bc10539cc0ea95a4 [2020-08-22 18:32:38,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:32:38,003 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:32:38,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:32:38,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:32:38,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:32:38,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:32:37" (1/1) ... [2020-08-22 18:32:38,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ab86b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:38, skipping insertion in model container [2020-08-22 18:32:38,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:32:37" (1/1) ... [2020-08-22 18:32:38,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:32:38,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:32:38,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:32:38,294 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:32:38,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:32:38,430 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:32:38,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:38 WrapperNode [2020-08-22 18:32:38,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:32:38,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:32:38,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:32:38,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:32:38,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:38" (1/1) ... [2020-08-22 18:32:38,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:38" (1/1) ... [2020-08-22 18:32:38,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:38" (1/1) ... [2020-08-22 18:32:38,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:38" (1/1) ... [2020-08-22 18:32:38,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:38" (1/1) ... [2020-08-22 18:32:38,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:38" (1/1) ... [2020-08-22 18:32:38,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:38" (1/1) ... [2020-08-22 18:32:38,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:32:38,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:32:38,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:32:38,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:32:38,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:38" (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 [2020-08-22 18:32:38,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:32:38,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:32:38,544 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2020-08-22 18:32:38,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-22 18:32:38,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-08-22 18:32:38,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:32:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:32:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-22 18:32:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2020-08-22 18:32:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:32:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 18:32:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:32:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:32:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:32:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 18:32:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-22 18:32:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-08-22 18:32:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:32:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 18:32:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:32:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:32:39,054 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:32:39,054 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-08-22 18:32:39,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:32:39 BoogieIcfgContainer [2020-08-22 18:32:39,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:32:39,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:32:39,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:32:39,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:32:39,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:32:37" (1/3) ... [2020-08-22 18:32:39,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6faae7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:32:39, skipping insertion in model container [2020-08-22 18:32:39,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:38" (2/3) ... [2020-08-22 18:32:39,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6faae7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:32:39, skipping insertion in model container [2020-08-22 18:32:39,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:32:39" (3/3) ... [2020-08-22 18:32:39,071 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1211a.c [2020-08-22 18:32:39,083 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:32:39,091 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:32:39,105 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:32:39,128 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:32:39,128 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:32:39,128 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:32:39,129 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:32:39,129 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:32:39,129 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:32:39,129 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:32:39,129 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:32:39,149 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-08-22 18:32:39,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 18:32:39,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:32:39,165 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] [2020-08-22 18:32:39,165 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:32:39,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:32:39,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1432903932, now seen corresponding path program 1 times [2020-08-22 18:32:39,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:32:39,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816255331] [2020-08-22 18:32:39,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:32:39,254 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:32:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:39,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:32:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:39,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 18:32:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:39,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 18:32:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:32:39,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816255331] [2020-08-22 18:32:39,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:32:39,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:32:39,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96544245] [2020-08-22 18:32:39,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:32:39,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:32:39,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:32:39,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:32:39,471 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 4 states. [2020-08-22 18:32:39,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:32:39,893 INFO L93 Difference]: Finished difference Result 315 states and 363 transitions. [2020-08-22 18:32:39,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 18:32:39,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 18:32:39,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:32:39,907 INFO L225 Difference]: With dead ends: 315 [2020-08-22 18:32:39,907 INFO L226 Difference]: Without dead ends: 153 [2020-08-22 18:32:39,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:32:39,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-22 18:32:39,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-08-22 18:32:39,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-22 18:32:39,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2020-08-22 18:32:39,974 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 47 [2020-08-22 18:32:39,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:32:39,975 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 157 transitions. [2020-08-22 18:32:39,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:32:39,975 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 157 transitions. [2020-08-22 18:32:39,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-22 18:32:39,980 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:32:39,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:32:39,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:32:39,981 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:32:39,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:32:39,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1562102553, now seen corresponding path program 1 times [2020-08-22 18:32:39,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:32:39,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819939223] [2020-08-22 18:32:39,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:32:39,985 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:32:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:40,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:32:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:40,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 18:32:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:40,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 18:32:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:32:40,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819939223] [2020-08-22 18:32:40,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:32:40,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:32:40,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542762575] [2020-08-22 18:32:40,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:32:40,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:32:40,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:32:40,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:32:40,291 INFO L87 Difference]: Start difference. First operand 153 states and 157 transitions. Second operand 5 states. [2020-08-22 18:32:40,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:32:40,648 INFO L93 Difference]: Finished difference Result 161 states and 164 transitions. [2020-08-22 18:32:40,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:32:40,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-08-22 18:32:40,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:32:40,651 INFO L225 Difference]: With dead ends: 161 [2020-08-22 18:32:40,652 INFO L226 Difference]: Without dead ends: 153 [2020-08-22 18:32:40,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:32:40,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-22 18:32:40,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-08-22 18:32:40,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-22 18:32:40,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 156 transitions. [2020-08-22 18:32:40,672 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 156 transitions. Word has length 72 [2020-08-22 18:32:40,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:32:40,673 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 156 transitions. [2020-08-22 18:32:40,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:32:40,673 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 156 transitions. [2020-08-22 18:32:40,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 18:32:40,675 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:32:40,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:32:40,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:32:40,676 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:32:40,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:32:40,677 INFO L82 PathProgramCache]: Analyzing trace with hash 934667084, now seen corresponding path program 1 times [2020-08-22 18:32:40,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:32:40,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138919604] [2020-08-22 18:32:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:32:40,680 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:32:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:32:40,734 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:32:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:32:40,781 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:32:40,828 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:32:40,828 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:32:40,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:32:40,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:32:40 BoogieIcfgContainer [2020-08-22 18:32:40,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:32:40,857 INFO L168 Benchmark]: Toolchain (without parser) took 2853.22 ms. Allocated memory was 140.5 MB in the beginning and 234.9 MB in the end (delta: 94.4 MB). Free memory was 104.6 MB in the beginning and 100.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 98.5 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:40,858 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 18:32:40,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.30 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 104.4 MB in the beginning and 180.6 MB in the end (delta: -76.3 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:40,860 INFO L168 Benchmark]: Boogie Preprocessor took 53.89 ms. Allocated memory is still 203.4 MB. Free memory was 180.6 MB in the beginning and 178.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:40,861 INFO L168 Benchmark]: RCFGBuilder took 577.28 ms. Allocated memory is still 203.4 MB. Free memory was 178.7 MB in the beginning and 140.1 MB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:40,862 INFO L168 Benchmark]: TraceAbstraction took 1789.90 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 139.4 MB in the beginning and 100.4 MB in the end (delta: 39.0 MB). Peak memory consumption was 70.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:40,866 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 427.30 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 104.4 MB in the beginning and 180.6 MB in the end (delta: -76.3 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.89 ms. Allocated memory is still 203.4 MB. Free memory was 180.6 MB in the beginning and 178.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 577.28 ms. Allocated memory is still 203.4 MB. Free memory was 178.7 MB in the beginning and 140.1 MB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1789.90 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 139.4 MB in the beginning and 100.4 MB in the end (delta: 39.0 MB). Peak memory consumption was 70.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 110]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 109, overapproximation of someBinaryArithmeticFLOAToperation at line 104, overapproximation of bitwiseAnd at line 93. Possible FailurePath: [L12] static const float one_modf = 1.0; [L104] float x = 1.0f / 0.0f; [L105] float iptr = __VERIFIER_nondet_float(); [L106] CALL, EXPR modf_float(x, &iptr) [L15] __int32_t i0, j0; [L16] __uint32_t i; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (i0) = gf_u.word [L22] j0 = ((i0 >> 23) & 0xff) - 0x7f [L23] COND TRUE j0 < 23 [L24] COND TRUE j0 < 0 [L26] ieee_float_shape_type sf_u; [L27] sf_u.word = (i0 & 0x80000000) [L28] EXPR sf_u.value [L28] (*iptr) = sf_u.value [L30] return x; [L106] RET, EXPR modf_float(x, &iptr) [L106] float res = modf_float(x, &iptr); [L109] EXPR \read(iptr) [L109] CALL, EXPR isinf_float(iptr) [L87] __int32_t ix; [L89] ieee_float_shape_type gf_u; [L90] gf_u.value = (x) [L91] EXPR gf_u.word [L91] (ix) = gf_u.word [L93] ix &= 0x7fffffff [L94] return ((ix) == 0x7f800000L); [L109] RET, EXPR isinf_float(iptr) [L109] isinf_float(iptr) && !(res == 0.0f && __signbit_float(res) == 0) [L109] EXPR res == 0.0f && __signbit_float(res) == 0 [L109] isinf_float(iptr) && !(res == 0.0f && __signbit_float(res) == 0) [L109] COND TRUE isinf_float(iptr) && !(res == 0.0f && __signbit_float(res) == 0) [L110] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 168 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 316 SDtfs, 42 SDslu, 332 SDs, 0 SdLazy, 424 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...