/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_1052a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:31:06,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:31:06,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:31:06,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 18:31:06,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:31:06,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:31:06,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:31:06,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:31:06,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:31:06,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:31:06,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:31:06,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:31:06,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:31:06,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:31:06,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:31:06,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:31:06,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:31:06,298 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 18:31:06,307 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:31:06,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:31:06,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:31:06,309 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:31:06,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:31:06,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:31:06,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:31:06,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:31:06,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:31:06,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:31:06,310 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:31:06,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:31:06,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:31:06,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:31:06,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:31:06,311 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:31:06,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:31:06,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:31:06,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:31:06,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:31:06,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:31:06,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:31:06,312 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:31:06,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:31:06,610 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:31:06,613 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:31:06,614 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:31:06,615 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:31:06,615 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c [2020-08-22 18:31:06,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8810d32fd/5c083fdffe2343eea278ceb87692274d/FLAG07511517e [2020-08-22 18:31:07,118 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:31:07,118 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c [2020-08-22 18:31:07,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8810d32fd/5c083fdffe2343eea278ceb87692274d/FLAG07511517e [2020-08-22 18:31:07,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8810d32fd/5c083fdffe2343eea278ceb87692274d [2020-08-22 18:31:07,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:31:07,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:31:07,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:07,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:31:07,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:31:07,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:07" (1/1) ... [2020-08-22 18:31:07,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66af17f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:07, skipping insertion in model container [2020-08-22 18:31:07,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:07" (1/1) ... [2020-08-22 18:31:07,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:31:07,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:31:07,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:07,683 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:31:07,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:07,834 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:31:07,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:07 WrapperNode [2020-08-22 18:31:07,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:07,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:31:07,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:31:07,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:31:07,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:07" (1/1) ... [2020-08-22 18:31:07,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:07" (1/1) ... [2020-08-22 18:31:07,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:07" (1/1) ... [2020-08-22 18:31:07,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:07" (1/1) ... [2020-08-22 18:31:07,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:07" (1/1) ... [2020-08-22 18:31:07,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:07" (1/1) ... [2020-08-22 18:31:07,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:07" (1/1) ... [2020-08-22 18:31:07,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:31:07,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:31:07,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:31:07,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:31:07,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:07" (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 18:31:07,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:31:07,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:31:07,951 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-22 18:31:07,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-08-22 18:31:07,951 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:31:07,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:31:07,952 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-22 18:31:07,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:31:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 18:31:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:31:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:31:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:31:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 18:31:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-08-22 18:31:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:31:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:31:07,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:31:08,522 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:31:08,522 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 18:31:08,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:31:08 BoogieIcfgContainer [2020-08-22 18:31:08,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:31:08,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:31:08,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:31:08,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:31:08,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:31:07" (1/3) ... [2020-08-22 18:31:08,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74121583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:31:08, skipping insertion in model container [2020-08-22 18:31:08,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:07" (2/3) ... [2020-08-22 18:31:08,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74121583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:31:08, skipping insertion in model container [2020-08-22 18:31:08,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:31:08" (3/3) ... [2020-08-22 18:31:08,535 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052a.c [2020-08-22 18:31:08,545 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:31:08,553 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:31:08,567 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:31:08,587 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:31:08,587 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:31:08,587 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:31:08,587 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:31:08,587 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:31:08,588 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:31:08,588 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:31:08,588 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:31:08,605 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2020-08-22 18:31:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 18:31:08,618 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:31:08,619 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] [2020-08-22 18:31:08,620 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:31:08,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:31:08,626 INFO L82 PathProgramCache]: Analyzing trace with hash -603915510, now seen corresponding path program 1 times [2020-08-22 18:31:08,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:31:08,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856771326] [2020-08-22 18:31:08,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:31:08,697 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:31:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:08,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:31:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:08,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 18:31:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:08,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:31:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:08,874 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 18:31:08,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856771326] [2020-08-22 18:31:08,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:31:08,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:31:08,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087841347] [2020-08-22 18:31:08,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:31:08,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:31:08,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:31:08,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:31:08,919 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 4 states. [2020-08-22 18:31:09,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:31:09,322 INFO L93 Difference]: Finished difference Result 221 states and 264 transitions. [2020-08-22 18:31:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 18:31:09,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-08-22 18:31:09,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:31:09,336 INFO L225 Difference]: With dead ends: 221 [2020-08-22 18:31:09,336 INFO L226 Difference]: Without dead ends: 112 [2020-08-22 18:31:09,341 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 18:31:09,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-08-22 18:31:09,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-08-22 18:31:09,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-08-22 18:31:09,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2020-08-22 18:31:09,411 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 41 [2020-08-22 18:31:09,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:31:09,412 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2020-08-22 18:31:09,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:31:09,412 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2020-08-22 18:31:09,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-22 18:31:09,415 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:31:09,416 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] [2020-08-22 18:31:09,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:31:09,416 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:31:09,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:31:09,417 INFO L82 PathProgramCache]: Analyzing trace with hash -640308234, now seen corresponding path program 1 times [2020-08-22 18:31:09,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:31:09,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348461762] [2020-08-22 18:31:09,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:31:09,420 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:31:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:31:09,546 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:31:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:31:09,633 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:31:09,667 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:31:09,668 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:31:09,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:31:09,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:31:09 BoogieIcfgContainer [2020-08-22 18:31:09,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:31:09,692 INFO L168 Benchmark]: Toolchain (without parser) took 2225.66 ms. Allocated memory was 144.7 MB in the beginning and 233.8 MB in the end (delta: 89.1 MB). Free memory was 101.8 MB in the beginning and 188.3 MB in the end (delta: -86.5 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:09,693 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 18:31:09,694 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.78 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 101.6 MB in the beginning and 180.1 MB in the end (delta: -78.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:09,695 INFO L168 Benchmark]: Boogie Preprocessor took 51.20 ms. Allocated memory is still 202.4 MB. Free memory was 180.1 MB in the beginning and 178.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:09,696 INFO L168 Benchmark]: RCFGBuilder took 640.06 ms. Allocated memory is still 202.4 MB. Free memory was 178.0 MB in the beginning and 147.9 MB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:09,697 INFO L168 Benchmark]: TraceAbstraction took 1161.35 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 147.9 MB in the beginning and 188.3 MB in the end (delta: -40.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 18:31:09,702 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.78 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 101.6 MB in the beginning and 180.1 MB in the end (delta: -78.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.20 ms. Allocated memory is still 202.4 MB. Free memory was 180.1 MB in the beginning and 178.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 640.06 ms. Allocated memory is still 202.4 MB. Free memory was 178.0 MB in the beginning and 147.9 MB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1161.35 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 147.9 MB in the beginning and 188.3 MB in the end (delta: -40.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 106]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 91, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L101] double x = 1.0 / 0.0; [L102] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND FALSE !(j0 < 20) [L47] COND TRUE j0 > 51 [L48] COND TRUE j0 == 0x400 [L49] return x + x; [L102] RET, EXPR floor_double(x) [L102] double res = floor_double(x); [L105] CALL, EXPR isinf_double(res) [L81] __int32_t hx, lx; [L83] ieee_double_shape_type ew_u; [L84] ew_u.value = (x) [L85] EXPR ew_u.parts.msw [L85] (hx) = ew_u.parts.msw [L86] EXPR ew_u.parts.lsw [L86] (lx) = ew_u.parts.lsw [L88] hx &= 0x7fffffff [L89] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L90] hx = 0x7ff00000 - hx [L91] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L105] RET, EXPR isinf_double(res) [L105] COND TRUE !isinf_double(res) [L106] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 119 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: 129 SDtfs, 21 SDslu, 97 SDs, 0 SdLazy, 141 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=119occurred 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...