/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/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:10:49,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:10:49,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:10:49,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:10:49,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:10:49,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:10:49,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:10:49,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:10:49,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:10:49,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:10:49,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:10:49,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:10:49,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:10:49,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:10:49,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:10:49,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:10:49,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:10:49,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:10:49,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:10:49,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:10:49,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:10:49,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:10:49,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:10:49,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:10:49,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:10:49,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:10:49,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:10:49,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:10:49,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:10:49,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-04 16:10:49,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:10:49,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:10:49,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:10:49,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:10:49,646 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:10:49,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:10:49,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:10:49,648 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:10:49,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:10:49,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:10:49,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:10:49,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:10:49,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:10:49,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:10:49,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:10:49,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:10:49,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:10:49,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:10:49,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:10:49,652 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:10:49,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:10:49,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:10:49,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:10:49,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:10:49,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:10:49,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:10:49,653 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:10:50,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:10:50,086 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:10:50,090 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:10:50,092 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:10:50,092 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:10:50,093 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-09-04 16:10:50,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3ea9793b/340c2b5c4fde4ff89c3bc35da75dbfb6/FLAG94d91f370 [2020-09-04 16:10:50,761 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:10:50,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-09-04 16:10:50,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3ea9793b/340c2b5c4fde4ff89c3bc35da75dbfb6/FLAG94d91f370 [2020-09-04 16:10:51,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3ea9793b/340c2b5c4fde4ff89c3bc35da75dbfb6 [2020-09-04 16:10:51,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:10:51,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:10:51,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:51,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:10:51,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:10:51,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:51" (1/1) ... [2020-09-04 16:10:51,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d6133a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:51, skipping insertion in model container [2020-09-04 16:10:51,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:51" (1/1) ... [2020-09-04 16:10:51,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:10:51,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:10:51,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:51,474 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:10:51,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:51,643 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:10:51,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:51 WrapperNode [2020-09-04 16:10:51,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:51,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:10:51,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:10:51,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:10:51,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:51" (1/1) ... [2020-09-04 16:10:51,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:51" (1/1) ... [2020-09-04 16:10:51,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:51" (1/1) ... [2020-09-04 16:10:51,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:51" (1/1) ... [2020-09-04 16:10:51,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:51" (1/1) ... [2020-09-04 16:10:51,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:51" (1/1) ... [2020-09-04 16:10:51,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:51" (1/1) ... [2020-09-04 16:10:51,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:10:51,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:10:51,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:10:51,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:10:51,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:10:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:10:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:10:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-04 16:10:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-04 16:10:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-09-04 16:10:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:10:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:10:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-04 16:10:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-04 16:10:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-04 16:10:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:10:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 16:10:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:10:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:10:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 16:10:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:10:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-09-04 16:10:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:10:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:10:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-04 16:10:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:10:52,465 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:10:52,466 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-04 16:10:52,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:52 BoogieIcfgContainer [2020-09-04 16:10:52,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:10:52,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:10:52,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:10:52,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:10:52,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:10:51" (1/3) ... [2020-09-04 16:10:52,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37cea2ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:52, skipping insertion in model container [2020-09-04 16:10:52,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:51" (2/3) ... [2020-09-04 16:10:52,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37cea2ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:52, skipping insertion in model container [2020-09-04 16:10:52,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:52" (3/3) ... [2020-09-04 16:10:52,483 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-09-04 16:10:52,495 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:10:52,507 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:10:52,529 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:10:52,559 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:10:52,559 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:10:52,559 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:10:52,559 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:10:52,560 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:10:52,560 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:10:52,560 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:10:52,560 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:10:52,584 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-09-04 16:10:52,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-04 16:10:52,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:10:52,603 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] [2020-09-04 16:10:52,603 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:10:52,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:10:52,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1076720203, now seen corresponding path program 1 times [2020-09-04 16:10:52,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:10:52,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287264835] [2020-09-04 16:10:52,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:10:52,712 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:10:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:52,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:10:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:52,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 16:10:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:52,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 16:10:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:10:52,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287264835] [2020-09-04 16:10:52,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:10:52,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:10:52,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621601887] [2020-09-04 16:10:52,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:10:52,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:10:52,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:10:52,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:10:52,962 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2020-09-04 16:10:53,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:10:53,573 INFO L93 Difference]: Finished difference Result 414 states and 503 transitions. [2020-09-04 16:10:53,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 16:10:53,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-04 16:10:53,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:10:53,591 INFO L225 Difference]: With dead ends: 414 [2020-09-04 16:10:53,591 INFO L226 Difference]: Without dead ends: 209 [2020-09-04 16:10:53,598 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 [2020-09-04 16:10:53,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-04 16:10:53,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-09-04 16:10:53,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-09-04 16:10:53,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 235 transitions. [2020-09-04 16:10:53,675 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 235 transitions. Word has length 51 [2020-09-04 16:10:53,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:10:53,675 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 235 transitions. [2020-09-04 16:10:53,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:10:53,676 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 235 transitions. [2020-09-04 16:10:53,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-04 16:10:53,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:10:53,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:10:53,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:10:53,680 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:10:53,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:10:53,681 INFO L82 PathProgramCache]: Analyzing trace with hash -484158952, now seen corresponding path program 1 times [2020-09-04 16:10:53,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:10:53,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789741115] [2020-09-04 16:10:53,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:10:53,684 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:10:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:53,801 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:53,913 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:53,981 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:10:53,981 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:10:53,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:10:54,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:10:54 BoogieIcfgContainer [2020-09-04 16:10:54,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:10:54,045 INFO L168 Benchmark]: Toolchain (without parser) took 2946.35 ms. Allocated memory was 140.5 MB in the beginning and 235.4 MB in the end (delta: 94.9 MB). Free memory was 103.1 MB in the beginning and 130.4 MB in the end (delta: -27.3 MB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:54,046 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-04 16:10:54,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 545.43 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 103.1 MB in the beginning and 180.1 MB in the end (delta: -76.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:54,048 INFO L168 Benchmark]: Boogie Preprocessor took 69.66 ms. Allocated memory is still 204.5 MB. Free memory was 180.1 MB in the beginning and 177.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:54,049 INFO L168 Benchmark]: RCFGBuilder took 759.38 ms. Allocated memory is still 204.5 MB. Free memory was 177.0 MB in the beginning and 129.9 MB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:54,052 INFO L168 Benchmark]: TraceAbstraction took 1564.17 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 129.0 MB in the beginning and 130.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:54,062 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 545.43 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 103.1 MB in the beginning and 180.1 MB in the end (delta: -76.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.66 ms. Allocated memory is still 204.5 MB. Free memory was 180.1 MB in the beginning and 177.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 759.38 ms. Allocated memory is still 204.5 MB. Free memory was 177.0 MB in the beginning and 129.9 MB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1564.17 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 129.0 MB in the beginning and 130.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L183] RET isfinite_double(x) [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L185] RET, EXPR fmod_double(x, y) [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x [L189] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 220 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 239 SDtfs, 37 SDslu, 182 SDs, 0 SdLazy, 260 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred 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: 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...