/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_1032d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:01:55,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:01:55,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:01:55,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:01:55,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:01:55,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:01:55,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:01:55,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:01:55,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:01:56,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:01:56,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:01:56,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:01:56,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:01:56,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:01:56,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:01:56,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:01:56,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:01:56,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:01:56,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:01:56,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:01:56,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:01:56,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:01:56,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:01:56,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:01:56,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:01:56,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:01:56,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:01:56,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:01:56,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:01:56,036 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:01:56,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:01:56,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:01:56,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:01:56,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:01:56,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:01:56,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:01:56,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:01:56,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:01:56,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:01:56,039 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:01:56,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:01:56,039 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:01:56,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:01:56,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:01:56,040 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:01:56,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:01:56,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:01:56,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:01:56,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:01:56,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:01:56,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:01:56,041 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:01:56,368 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:01:56,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:01:56,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:01:56,390 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:01:56,390 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:01:56,391 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1032d.c [2020-07-07 13:01:56,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7390cc5/f91884fc0bcb4b478cf5388b7cbae5c3/FLAG16bdef39b [2020-07-07 13:01:56,953 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:01:56,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1032d.c [2020-07-07 13:01:56,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7390cc5/f91884fc0bcb4b478cf5388b7cbae5c3/FLAG16bdef39b [2020-07-07 13:01:57,310 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7390cc5/f91884fc0bcb4b478cf5388b7cbae5c3 [2020-07-07 13:01:57,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:01:57,321 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:01:57,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:01:57,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:01:57,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:01:57,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:01:57" (1/1) ... [2020-07-07 13:01:57,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b54970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:57, skipping insertion in model container [2020-07-07 13:01:57,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:01:57" (1/1) ... [2020-07-07 13:01:57,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:01:57,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:01:57,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:01:57,588 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:01:57,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:01:57,716 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:01:57,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:57 WrapperNode [2020-07-07 13:01:57,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:01:57,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:01:57,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:01:57,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:01:57,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:57" (1/1) ... [2020-07-07 13:01:57,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:57" (1/1) ... [2020-07-07 13:01:57,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:57" (1/1) ... [2020-07-07 13:01:57,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:57" (1/1) ... [2020-07-07 13:01:57,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:57" (1/1) ... [2020-07-07 13:01:57,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:57" (1/1) ... [2020-07-07 13:01:57,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:57" (1/1) ... [2020-07-07 13:01:57,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:01:57,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:01:57,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:01:57,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:01:57,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:57" (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 [2020-07-07 13:01:57,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:01:57,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:01:57,839 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2020-07-07 13:01:57,839 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-07-07 13:01:57,839 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:01:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:01:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2020-07-07 13:01:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:01:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-07 13:01:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:01:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:01:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:01:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-07 13:01:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-07-07 13:01:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:01:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:01:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:01:58,279 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:01:58,280 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-07 13:01:58,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:01:58 BoogieIcfgContainer [2020-07-07 13:01:58,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:01:58,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:01:58,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:01:58,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:01:58,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:01:57" (1/3) ... [2020-07-07 13:01:58,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a813de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:01:58, skipping insertion in model container [2020-07-07 13:01:58,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:57" (2/3) ... [2020-07-07 13:01:58,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a813de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:01:58, skipping insertion in model container [2020-07-07 13:01:58,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:01:58" (3/3) ... [2020-07-07 13:01:58,292 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032d.c [2020-07-07 13:01:58,303 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:01:58,311 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:01:58,325 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:01:58,343 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:01:58,343 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:01:58,343 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:01:58,344 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:01:58,344 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:01:58,344 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:01:58,344 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:01:58,344 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:01:58,359 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-07-07 13:01:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-07 13:01:58,369 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:01:58,371 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] [2020-07-07 13:01:58,371 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:01:58,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:01:58,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1159815618, now seen corresponding path program 1 times [2020-07-07 13:01:58,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:01:58,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145324028] [2020-07-07 13:01:58,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:01:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:01:58,628 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:01:58,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145324028] [2020-07-07 13:01:58,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:01:58,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:01:58,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565821138] [2020-07-07 13:01:58,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:01:58,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:01:58,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:01:58,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:01:58,662 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2020-07-07 13:01:59,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:01:59,058 INFO L93 Difference]: Finished difference Result 147 states and 170 transitions. [2020-07-07 13:01:59,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:01:59,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-07-07 13:01:59,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:01:59,074 INFO L225 Difference]: With dead ends: 147 [2020-07-07 13:01:59,074 INFO L226 Difference]: Without dead ends: 73 [2020-07-07 13:01:59,082 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 [2020-07-07 13:01:59,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-07 13:01:59,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-07-07 13:01:59,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-07-07 13:01:59,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-07-07 13:01:59,136 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 33 [2020-07-07 13:01:59,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:01:59,137 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-07-07 13:01:59,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:01:59,137 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-07-07 13:01:59,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-07 13:01:59,139 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:01:59,140 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] [2020-07-07 13:01:59,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:01:59,141 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:01:59,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:01:59,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1327205882, now seen corresponding path program 1 times [2020-07-07 13:01:59,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:01:59,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245883115] [2020-07-07 13:01:59,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:01:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:01:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:01:59,356 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:01:59,357 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:01:59,357 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:01:59,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:01:59,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:01:59 BoogieIcfgContainer [2020-07-07 13:01:59,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:01:59,385 INFO L168 Benchmark]: Toolchain (without parser) took 2062.59 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 104.2 MB in the beginning and 97.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:59,386 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:01:59,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.35 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 104.0 MB in the beginning and 179.3 MB in the end (delta: -75.3 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:59,388 INFO L168 Benchmark]: Boogie Preprocessor took 46.57 ms. Allocated memory is still 200.3 MB. Free memory was 179.3 MB in the beginning and 177.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:59,389 INFO L168 Benchmark]: RCFGBuilder took 520.38 ms. Allocated memory is still 200.3 MB. Free memory was 177.0 MB in the beginning and 154.4 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:59,390 INFO L168 Benchmark]: TraceAbstraction took 1096.23 ms. Allocated memory is still 200.3 MB. Free memory was 154.4 MB in the beginning and 97.9 MB in the end (delta: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:59,394 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 138.9 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 394.35 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 104.0 MB in the beginning and 179.3 MB in the end (delta: -75.3 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.57 ms. Allocated memory is still 200.3 MB. Free memory was 179.3 MB in the beginning and 177.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 520.38 ms. Allocated memory is still 200.3 MB. Free memory was 177.0 MB in the beginning and 154.4 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1096.23 ms. Allocated memory is still 200.3 MB. Free memory was 154.4 MB in the beginning and 97.9 MB in the end (delta: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 78]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 42, overapproximation of bitwiseAnd at line 62. Possible FailurePath: [L73] float x = -1.0f / 0.0f; [L74] CALL, EXPR round_float(x) [L12] __uint32_t w; [L14] int exponent_less_127; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L22] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L24] COND FALSE !(exponent_less_127 < 23) [L40] COND TRUE exponent_less_127 == 128 [L42] return x + x; [L74] RET, EXPR round_float(x) [L74] float res = round_float(x); [L77] CALL, EXPR isinf_float(res) [L56] __int32_t ix; [L58] ieee_float_shape_type gf_u; [L59] gf_u.value = (x) [L60] EXPR gf_u.word [L60] (ix) = gf_u.word [L62] ix &= 0x7fffffff [L63] return ((ix) == 0x7f800000L); [L77] RET, EXPR isinf_float(res) [L77] COND TRUE !isinf_float(res) [L78] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 80 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: 80 SDtfs, 13 SDslu, 59 SDs, 0 SdLazy, 89 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=80occurred 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...