/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_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:01:35,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:01:35,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:01:35,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-07 13:01:35,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:01:35,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:01:35,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:01:35,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:01:35,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:01:35,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:01:35,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:01:35,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:01:35,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:01:35,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:01:35,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:01:35,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:01:35,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:01:35,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:01:35,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:01:35,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:01:35,767 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 13:01:35,779 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:01:35,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:01:35,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:01:35,784 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:01:35,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:01:35,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:01:35,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:01:35,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:01:35,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:01:35,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:01:35,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:01:35,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:01:35,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:01:35,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:01:35,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:01:35,786 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:01:35,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:01:35,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:01:35,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:01:35,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:01:35,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:01:35,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:01:35,788 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:01:36,076 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:01:36,089 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:01:36,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:01:36,094 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:01:36,094 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:01:36,095 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-07-07 13:01:36,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a3d99955/b1dbf448eec3487d9faffda03162577b/FLAGc0f8f91b0 [2020-07-07 13:01:36,611 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:01:36,611 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-07-07 13:01:36,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a3d99955/b1dbf448eec3487d9faffda03162577b/FLAGc0f8f91b0 [2020-07-07 13:01:36,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a3d99955/b1dbf448eec3487d9faffda03162577b [2020-07-07 13:01:36,995 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:01:36,997 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:01:36,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:01:36,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:01:37,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:01:37,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:01:36" (1/1) ... [2020-07-07 13:01:37,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f210f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:37, skipping insertion in model container [2020-07-07 13:01:37,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:01:36" (1/1) ... [2020-07-07 13:01:37,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:01:37,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:01:37,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:01:37,212 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:01:37,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:01:37,352 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:01:37,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:37 WrapperNode [2020-07-07 13:01:37,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:01:37,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:01:37,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:01:37,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:01:37,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:37" (1/1) ... [2020-07-07 13:01:37,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:37" (1/1) ... [2020-07-07 13:01:37,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:37" (1/1) ... [2020-07-07 13:01:37,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:37" (1/1) ... [2020-07-07 13:01:37,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:37" (1/1) ... [2020-07-07 13:01:37,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:37" (1/1) ... [2020-07-07 13:01:37,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:37" (1/1) ... [2020-07-07 13:01:37,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:01:37,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:01:37,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:01:37,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:01:37,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:37" (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 13:01:37,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:01:37,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:01:37,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-07-07 13:01:37,475 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-07-07 13:01:37,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-07 13:01:37,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:01:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:01:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-07 13:01:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-07-07 13:01:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:01:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-07 13:01:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:01:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:01:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-07-07 13:01:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-07 13:01:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:01:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:01:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:01:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-07 13:01:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:01:37,846 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:01:37,846 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-07 13:01:37,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:01:37 BoogieIcfgContainer [2020-07-07 13:01:37,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:01:37,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:01:37,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:01:37,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:01:37,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:01:36" (1/3) ... [2020-07-07 13:01:37,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500a68b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:01:37, skipping insertion in model container [2020-07-07 13:01:37,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:37" (2/3) ... [2020-07-07 13:01:37,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500a68b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:01:37, skipping insertion in model container [2020-07-07 13:01:37,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:01:37" (3/3) ... [2020-07-07 13:01:37,859 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-07-07 13:01:37,869 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:01:37,875 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:01:37,888 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:01:37,905 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:01:37,905 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:01:37,905 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:01:37,906 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:01:37,906 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:01:37,906 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:01:37,906 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:01:37,906 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:01:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2020-07-07 13:01:37,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-07 13:01:37,935 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:01:37,936 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] [2020-07-07 13:01:37,937 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:01:37,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:01:37,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1930633076, now seen corresponding path program 1 times [2020-07-07 13:01:37,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:01:37,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586022738] [2020-07-07 13:01:37,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:01:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:38,196 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 13:01:38,197 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:01:38,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586022738] [2020-07-07 13:01:38,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:01:38,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:01:38,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728242062] [2020-07-07 13:01:38,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:01:38,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:01:38,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:01:38,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:01:38,226 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 4 states. [2020-07-07 13:01:38,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:01:38,535 INFO L93 Difference]: Finished difference Result 176 states and 204 transitions. [2020-07-07 13:01:38,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:01:38,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-07-07 13:01:38,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:01:38,549 INFO L225 Difference]: With dead ends: 176 [2020-07-07 13:01:38,549 INFO L226 Difference]: Without dead ends: 87 [2020-07-07 13:01:38,555 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 13:01:38,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-07-07 13:01:38,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-07-07 13:01:38,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-07-07 13:01:38,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-07-07 13:01:38,614 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 35 [2020-07-07 13:01:38,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:01:38,615 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-07-07 13:01:38,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:01:38,615 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-07-07 13:01:38,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-07 13:01:38,619 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:01:38,619 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:01:38,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:01:38,620 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:01:38,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:01:38,621 INFO L82 PathProgramCache]: Analyzing trace with hash -330335414, now seen corresponding path program 1 times [2020-07-07 13:01:38,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:01:38,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104281019] [2020-07-07 13:01:38,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:01:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:38,888 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 13:01:38,889 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:01:38,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104281019] [2020-07-07 13:01:38,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:01:38,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:01:38,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519242978] [2020-07-07 13:01:38,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:01:38,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:01:38,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:01:38,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:01:38,892 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 6 states. [2020-07-07 13:01:39,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:01:39,111 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-07-07 13:01:39,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:01:39,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-07-07 13:01:39,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:01:39,116 INFO L225 Difference]: With dead ends: 123 [2020-07-07 13:01:39,116 INFO L226 Difference]: Without dead ends: 92 [2020-07-07 13:01:39,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:01:39,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-07 13:01:39,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-07-07 13:01:39,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-07-07 13:01:39,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-07-07 13:01:39,135 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 49 [2020-07-07 13:01:39,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:01:39,136 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-07-07 13:01:39,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:01:39,136 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-07-07 13:01:39,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-07 13:01:39,138 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:01:39,138 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] [2020-07-07 13:01:39,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:01:39,139 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:01:39,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:01:39,139 INFO L82 PathProgramCache]: Analyzing trace with hash -389367439, now seen corresponding path program 1 times [2020-07-07 13:01:39,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:01:39,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809031604] [2020-07-07 13:01:39,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:01:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:39,314 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 13:01:39,315 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:01:39,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809031604] [2020-07-07 13:01:39,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:01:39,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:01:39,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342307731] [2020-07-07 13:01:39,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:01:39,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:01:39,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:01:39,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:01:39,318 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-07-07 13:01:39,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:01:39,514 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-07-07 13:01:39,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:01:39,515 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-07-07 13:01:39,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:01:39,517 INFO L225 Difference]: With dead ends: 127 [2020-07-07 13:01:39,517 INFO L226 Difference]: Without dead ends: 96 [2020-07-07 13:01:39,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:01:39,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-07-07 13:01:39,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-07-07 13:01:39,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-07-07 13:01:39,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-07-07 13:01:39,532 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 52 [2020-07-07 13:01:39,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:01:39,533 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-07-07 13:01:39,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:01:39,534 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-07-07 13:01:39,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-07 13:01:39,535 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:01:39,536 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] [2020-07-07 13:01:39,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:01:39,536 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:01:39,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:01:39,537 INFO L82 PathProgramCache]: Analyzing trace with hash 323107249, now seen corresponding path program 1 times [2020-07-07 13:01:39,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:01:39,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837262527] [2020-07-07 13:01:39,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:01:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:01:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:01:39,670 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:01:39,670 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:01:39,671 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:01:39,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:01:39,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:01:39 BoogieIcfgContainer [2020-07-07 13:01:39,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:01:39,699 INFO L168 Benchmark]: Toolchain (without parser) took 2701.24 ms. Allocated memory was 145.8 MB in the beginning and 235.9 MB in the end (delta: 90.2 MB). Free memory was 103.7 MB in the beginning and 97.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 96.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:39,700 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:01:39,702 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.75 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 103.5 MB in the beginning and 180.2 MB in the end (delta: -76.8 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:39,704 INFO L168 Benchmark]: Boogie Preprocessor took 56.13 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 177.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:39,705 INFO L168 Benchmark]: RCFGBuilder took 442.73 ms. Allocated memory is still 201.9 MB. Free memory was 177.8 MB in the beginning and 153.4 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:39,712 INFO L168 Benchmark]: TraceAbstraction took 1842.91 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 153.4 MB in the beginning and 97.4 MB in the end (delta: 56.0 MB). Peak memory consumption was 90.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:39,724 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 354.75 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 103.5 MB in the beginning and 180.2 MB in the end (delta: -76.8 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.13 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 177.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 442.73 ms. Allocated memory is still 201.9 MB. Free memory was 177.8 MB in the beginning and 153.4 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1842.91 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 153.4 MB in the beginning and 97.4 MB in the end (delta: 56.0 MB). Peak memory consumption was 90.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L81] CALL, EXPR fmax_double(x, y) [L52] CALL, EXPR __fpclassify_double(x) [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; [L52] RET, EXPR __fpclassify_double(x) [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; [L81] RET, EXPR fmax_double(x, y) [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 285 SDtfs, 59 SDslu, 523 SDs, 0 SdLazy, 377 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred 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, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 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...