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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:39:53,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:39:53,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:39:53,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:39:53,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:39:53,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:39:53,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:39:53,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:39:53,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:39:53,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:39:53,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:39:53,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:39:53,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:39:54,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:39:54,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:39:54,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:39:54,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:39:54,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:39:54,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:39:54,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:39:54,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:39:54,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:39:54,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:39:54,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:39:54,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:39:54,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:39:54,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:39:54,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:39:54,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:39:54,028 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:39:54,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:39:54,028 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:39:54,029 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:39:54,029 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:39:54,029 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:39:54,030 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:39:54,030 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:39:54,030 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:39:54,030 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:39:54,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:39:54,031 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:39:54,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:39:54,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:39:54,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:39:54,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:39:54,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:39:54,032 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:39:54,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:39:54,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:39:54,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:39:54,033 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:39:54,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:39:54,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:39:54,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:39:54,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:39:54,034 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:39:54,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:39:54,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:39:54,035 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:39:54,062 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:39:54,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:39:54,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:39:54,088 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:39:54,088 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:39:54,089 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c [2019-09-10 01:39:54,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfeb788db/56024cd7c5cf42da950831a192938283/FLAG0cd55fd14 [2019-09-10 01:39:54,655 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:39:54,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c [2019-09-10 01:39:54,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfeb788db/56024cd7c5cf42da950831a192938283/FLAG0cd55fd14 [2019-09-10 01:39:54,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfeb788db/56024cd7c5cf42da950831a192938283 [2019-09-10 01:39:54,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:39:54,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:39:54,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:39:54,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:39:54,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:39:54,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:39:54" (1/1) ... [2019-09-10 01:39:54,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@720701ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:39:54, skipping insertion in model container [2019-09-10 01:39:54,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:39:54" (1/1) ... [2019-09-10 01:39:54,976 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:39:55,023 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:39:55,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:39:55,394 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:39:55,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:39:55,492 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:39:55,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:39:55 WrapperNode [2019-09-10 01:39:55,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:39:55,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:39:55,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:39:55,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:39:55,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:39:55" (1/1) ... [2019-09-10 01:39:55,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:39:55" (1/1) ... [2019-09-10 01:39:55,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:39:55" (1/1) ... [2019-09-10 01:39:55,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:39:55" (1/1) ... [2019-09-10 01:39:55,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:39:55" (1/1) ... [2019-09-10 01:39:55,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:39:55" (1/1) ... [2019-09-10 01:39:55,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:39:55" (1/1) ... [2019-09-10 01:39:55,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:39:55,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:39:55,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:39:55,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:39:55,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:39:55" (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 [2019-09-10 01:39:55,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:39:55,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:39:55,603 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:39:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:39:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-10 01:39:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 01:39:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:39:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-09-10 01:39:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-09-10 01:39:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:39:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:39:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:39:56,245 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:39:56,246 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 01:39:56,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:39:56 BoogieIcfgContainer [2019-09-10 01:39:56,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:39:56,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:39:56,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:39:56,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:39:56,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:39:54" (1/3) ... [2019-09-10 01:39:56,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9e6ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:39:56, skipping insertion in model container [2019-09-10 01:39:56,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:39:55" (2/3) ... [2019-09-10 01:39:56,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9e6ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:39:56, skipping insertion in model container [2019-09-10 01:39:56,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:39:56" (3/3) ... [2019-09-10 01:39:56,255 INFO L109 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.v+lhb-reducer.c [2019-09-10 01:39:56,265 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:39:56,273 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:39:56,290 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:39:56,317 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:39:56,317 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:39:56,318 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:39:56,318 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:39:56,318 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:39:56,318 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:39:56,318 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:39:56,319 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:39:56,335 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2019-09-10 01:39:56,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-09-10 01:39:56,345 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:39:56,346 INFO L399 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] [2019-09-10 01:39:56,348 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:39:56,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:39:56,352 INFO L82 PathProgramCache]: Analyzing trace with hash -473065534, now seen corresponding path program 1 times [2019-09-10 01:39:56,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:39:56,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:39:56,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:39:56,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:39:56,398 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:39:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:39:56,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:39:56,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:39:56,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 01:39:56,784 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:39:56,790 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:39:56,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:39:56,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:39:56,809 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 4 states. [2019-09-10 01:39:56,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:39:56,885 INFO L93 Difference]: Finished difference Result 65 states and 106 transitions. [2019-09-10 01:39:56,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:39:56,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2019-09-10 01:39:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:39:56,900 INFO L225 Difference]: With dead ends: 65 [2019-09-10 01:39:56,901 INFO L226 Difference]: Without dead ends: 55 [2019-09-10 01:39:56,903 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:39:56,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-09-10 01:39:56,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-09-10 01:39:56,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-09-10 01:39:56,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2019-09-10 01:39:56,963 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 49 [2019-09-10 01:39:56,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:39:56,964 INFO L475 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2019-09-10 01:39:56,964 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:39:56,965 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2019-09-10 01:39:56,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-09-10 01:39:56,967 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:39:56,968 INFO L399 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] [2019-09-10 01:39:56,968 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:39:56,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:39:56,969 INFO L82 PathProgramCache]: Analyzing trace with hash -457961497, now seen corresponding path program 1 times [2019-09-10 01:39:56,970 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:39:56,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:39:56,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:39:56,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:39:56,974 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:39:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:39:57,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:39:57,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:39:57,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-09-10 01:39:57,361 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:39:57,363 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-10 01:39:57,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-10 01:39:57,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-09-10 01:39:57,364 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 12 states. [2019-09-10 01:39:57,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:39:57,543 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2019-09-10 01:39:57,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-10 01:39:57,544 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2019-09-10 01:39:57,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:39:57,546 INFO L225 Difference]: With dead ends: 61 [2019-09-10 01:39:57,546 INFO L226 Difference]: Without dead ends: 61 [2019-09-10 01:39:57,547 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-09-10 01:39:57,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-09-10 01:39:57,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2019-09-10 01:39:57,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-09-10 01:39:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2019-09-10 01:39:57,554 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 49 [2019-09-10 01:39:57,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:39:57,555 INFO L475 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2019-09-10 01:39:57,555 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-10 01:39:57,555 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2019-09-10 01:39:57,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-09-10 01:39:57,557 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:39:57,557 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:39:57,557 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:39:57,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:39:57,558 INFO L82 PathProgramCache]: Analyzing trace with hash 181592694, now seen corresponding path program 1 times [2019-09-10 01:39:57,558 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:39:57,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:39:57,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:39:57,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:39:57,560 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:39:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:39:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:39:57,639 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:39:57,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:39:57,639 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:39:57,640 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:39:57,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:39:57,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:39:57,640 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 3 states. [2019-09-10 01:39:57,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:39:57,651 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2019-09-10 01:39:57,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:39:57,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2019-09-10 01:39:57,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:39:57,653 INFO L225 Difference]: With dead ends: 58 [2019-09-10 01:39:57,653 INFO L226 Difference]: Without dead ends: 56 [2019-09-10 01:39:57,654 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:39:57,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-09-10 01:39:57,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-09-10 01:39:57,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-09-10 01:39:57,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2019-09-10 01:39:57,660 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 54 [2019-09-10 01:39:57,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:39:57,660 INFO L475 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2019-09-10 01:39:57,660 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:39:57,661 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2019-09-10 01:39:57,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-09-10 01:39:57,662 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:39:57,662 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:39:57,663 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:39:57,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:39:57,663 INFO L82 PathProgramCache]: Analyzing trace with hash 2020002747, now seen corresponding path program 1 times [2019-09-10 01:39:57,663 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:39:57,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:39:57,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:39:57,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:39:57,665 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:39:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:39:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:39:57,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:39:57,871 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:39:57,872 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 55 with the following transitions: [2019-09-10 01:39:57,878 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [11], [14], [17], [20], [23], [26], [29], [32], [35], [38], [41], [44], [47], [50], [53], [56], [59], [62], [65], [68], [71], [74], [77], [80], [83], [86], [89], [92], [95], [98], [101], [104], [107], [110], [113], [115], [118], [121], [124], [128], [137], [145], [148], [149], [154], [156], [195], [196], [197] [2019-09-10 01:39:57,928 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:39:57,928 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:39:58,292 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator COMPLT has no precise implementation. [2019-09-10 01:39:58,358 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 01:39:58,363 INFO L272 AbstractInterpreter]: Visited 53 different actions 110 times. Merged at 11 different actions 51 times. Widened at 2 different actions 7 times. Performed 1239 root evaluator evaluations with a maximum evaluation depth of 3. Performed 1239 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 224 variables. [2019-09-10 01:39:58,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:39:58,370 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 01:39:58,370 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:39:58,371 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 01:39:58,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:39:58,392 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 01:39:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:39:58,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-10 01:39:58,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:39:58,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:39:58,614 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:39:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-10 01:39:58,897 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 01:39:58,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2019-09-10 01:39:58,897 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 01:39:58,899 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-10 01:39:58,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-10 01:39:58,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-09-10 01:39:58,902 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 13 states. [2019-09-10 01:39:59,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:39:59,117 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2019-09-10 01:39:59,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-10 01:39:59,119 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2019-09-10 01:39:59,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:39:59,120 INFO L225 Difference]: With dead ends: 64 [2019-09-10 01:39:59,120 INFO L226 Difference]: Without dead ends: 64 [2019-09-10 01:39:59,121 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-09-10 01:39:59,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-09-10 01:39:59,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2019-09-10 01:39:59,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-09-10 01:39:59,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2019-09-10 01:39:59,129 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 54 [2019-09-10 01:39:59,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:39:59,130 INFO L475 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2019-09-10 01:39:59,130 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-10 01:39:59,130 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2019-09-10 01:39:59,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-10 01:39:59,136 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:39:59,137 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:39:59,137 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:39:59,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:39:59,138 INFO L82 PathProgramCache]: Analyzing trace with hash -403418009, now seen corresponding path program 2 times [2019-09-10 01:39:59,138 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:39:59,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:39:59,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:39:59,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:39:59,140 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:39:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:39:59,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:39:59,340 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:39:59,340 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:39:59,341 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 01:39:59,341 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 01:39:59,341 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:39:59,341 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 01:39:59,363 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-10 01:39:59,363 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-09-10 01:39:59,535 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-10 01:39:59,536 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 01:39:59,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-10 01:39:59,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:39:59,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-10 01:39:59,608 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:39:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-10 01:39:59,672 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-09-10 01:39:59,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [14] total 18 [2019-09-10 01:39:59,672 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:39:59,673 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:39:59,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:39:59,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2019-09-10 01:39:59,674 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 4 states. [2019-09-10 01:39:59,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:39:59,735 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2019-09-10 01:39:59,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:39:59,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2019-09-10 01:39:59,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:39:59,736 INFO L225 Difference]: With dead ends: 61 [2019-09-10 01:39:59,737 INFO L226 Difference]: Without dead ends: 61 [2019-09-10 01:39:59,738 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2019-09-10 01:39:59,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-09-10 01:39:59,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-09-10 01:39:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-09-10 01:39:59,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2019-09-10 01:39:59,746 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2019-09-10 01:39:59,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:39:59,748 INFO L475 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2019-09-10 01:39:59,748 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:39:59,748 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2019-09-10 01:39:59,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-10 01:39:59,750 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:39:59,753 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:39:59,754 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:39:59,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:39:59,755 INFO L82 PathProgramCache]: Analyzing trace with hash -80704495, now seen corresponding path program 1 times [2019-09-10 01:39:59,755 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:39:59,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:39:59,756 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 01:39:59,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:39:59,756 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:39:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:39:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:39:59,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:39:59,929 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:39:59,929 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 61 with the following transitions: [2019-09-10 01:39:59,929 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [11], [14], [17], [20], [23], [26], [29], [32], [35], [38], [41], [44], [47], [50], [53], [56], [59], [62], [65], [68], [71], [74], [77], [80], [83], [86], [89], [92], [95], [98], [101], [104], [107], [110], [113], [115], [118], [121], [124], [128], [137], [140], [145], [148], [149], [152], [154], [195], [196], [197] [2019-09-10 01:39:59,933 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:39:59,934 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:40:00,055 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator COMPGT has no precise implementation. [2019-09-10 01:40:00,068 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 01:40:00,069 INFO L272 AbstractInterpreter]: Visited 54 different actions 101 times. Merged at 12 different actions 41 times. Widened at 2 different actions 5 times. Performed 1171 root evaluator evaluations with a maximum evaluation depth of 3. Performed 1171 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 224 variables. [2019-09-10 01:40:00,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:40:00,069 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 01:40:00,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:40:00,070 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 01:40:00,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:40:00,089 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 01:40:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:40:00,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-10 01:40:00,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:40:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:40:00,272 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:40:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:40:00,531 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 01:40:00,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2019-09-10 01:40:00,531 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 01:40:00,531 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-10 01:40:00,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-10 01:40:00,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-09-10 01:40:00,533 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 14 states. [2019-09-10 01:40:00,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:40:00,703 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2019-09-10 01:40:00,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-10 01:40:00,703 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2019-09-10 01:40:00,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:40:00,705 INFO L225 Difference]: With dead ends: 69 [2019-09-10 01:40:00,705 INFO L226 Difference]: Without dead ends: 69 [2019-09-10 01:40:00,706 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-09-10 01:40:00,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-09-10 01:40:00,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2019-09-10 01:40:00,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-09-10 01:40:00,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2019-09-10 01:40:00,716 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 60 [2019-09-10 01:40:00,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:40:00,717 INFO L475 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2019-09-10 01:40:00,717 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-10 01:40:00,717 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2019-09-10 01:40:00,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-10 01:40:00,718 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:40:00,720 INFO L399 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:40:00,720 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:40:00,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:40:00,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1490558019, now seen corresponding path program 2 times [2019-09-10 01:40:00,721 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:40:00,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:40:00,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:40:00,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:40:00,723 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:40:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:40:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:40:00,918 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:40:00,918 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:40:00,918 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 01:40:00,918 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 01:40:00,918 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:40:00,918 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 01:40:00,948 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-10 01:40:00,948 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 01:40:01,086 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-10 01:40:01,087 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 01:40:01,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-10 01:40:01,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:40:01,156 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-10 01:40:01,156 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:40:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-10 01:40:01,212 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-09-10 01:40:01,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [15] total 19 [2019-09-10 01:40:01,213 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:40:01,214 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:40:01,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:40:01,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2019-09-10 01:40:01,215 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 4 states. [2019-09-10 01:40:01,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:40:01,262 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2019-09-10 01:40:01,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:40:01,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2019-09-10 01:40:01,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:40:01,264 INFO L225 Difference]: With dead ends: 61 [2019-09-10 01:40:01,264 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:40:01,265 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2019-09-10 01:40:01,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:40:01,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:40:01,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:40:01,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:40:01,266 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2019-09-10 01:40:01,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:40:01,267 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:40:01,267 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:40:01,267 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:40:01,267 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:40:01,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:40:01 BoogieIcfgContainer [2019-09-10 01:40:01,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:40:01,275 INFO L168 Benchmark]: Toolchain (without parser) took 6314.90 ms. Allocated memory was 134.2 MB in the beginning and 319.3 MB in the end (delta: 185.1 MB). Free memory was 89.8 MB in the beginning and 73.1 MB in the end (delta: 16.7 MB). Peak memory consumption was 201.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:40:01,276 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 134.2 MB. Free memory was 108.7 MB in the beginning and 108.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:40:01,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 532.79 ms. Allocated memory was 134.2 MB in the beginning and 201.9 MB in the end (delta: 67.6 MB). Free memory was 89.6 MB in the beginning and 173.6 MB in the end (delta: -84.0 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:40:01,278 INFO L168 Benchmark]: Boogie Preprocessor took 56.95 ms. Allocated memory is still 201.9 MB. Free memory was 173.6 MB in the beginning and 171.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:40:01,279 INFO L168 Benchmark]: RCFGBuilder took 697.29 ms. Allocated memory is still 201.9 MB. Free memory was 171.1 MB in the beginning and 129.4 MB in the end (delta: 41.7 MB). Peak memory consumption was 41.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:40:01,280 INFO L168 Benchmark]: TraceAbstraction took 5024.00 ms. Allocated memory was 201.9 MB in the beginning and 319.3 MB in the end (delta: 117.4 MB). Free memory was 128.8 MB in the beginning and 73.1 MB in the end (delta: 55.6 MB). Peak memory consumption was 173.1 MB. Max. memory is 7.1 GB. [2019-09-10 01:40:01,303 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 134.2 MB. Free memory was 108.7 MB in the beginning and 108.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 532.79 ms. Allocated memory was 134.2 MB in the beginning and 201.9 MB in the end (delta: 67.6 MB). Free memory was 89.6 MB in the beginning and 173.6 MB in the end (delta: -84.0 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.95 ms. Allocated memory is still 201.9 MB. Free memory was 173.6 MB in the beginning and 171.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 697.29 ms. Allocated memory is still 201.9 MB. Free memory was 171.1 MB in the beginning and 129.4 MB in the end (delta: 41.7 MB). Peak memory consumption was 41.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5024.00 ms. Allocated memory was 201.9 MB in the beginning and 319.3 MB in the end (delta: 117.4 MB). Free memory was 128.8 MB in the beginning and 73.1 MB in the end (delta: 55.6 MB). Peak memory consumption was 173.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 562]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. SAFE Result, 4.9s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 332 SDtfs, 207 SDslu, 782 SDs, 0 SdLazy, 513 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 550 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 628 NumberOfCodeBlocks, 613 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 851 ConstructedInterpolants, 0 QuantifiedInterpolants, 99399 SizeOfPredicates, 24 NumberOfNonLiveVariables, 3994 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 62/125 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...