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/interpolation.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:34:19,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:34:19,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:34:19,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:34:19,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:34:19,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:34:19,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:34:19,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:34:19,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:34:19,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:34:19,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:34:19,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:34:19,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:34:19,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:34:19,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:34:19,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:34:19,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:34:19,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:34:19,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:34:19,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:34:19,101 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 01:34:19,116 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:34:19,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:34:19,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:34:19,116 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:34:19,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:34:19,117 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:34:19,118 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:34:19,118 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:34:19,118 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:34:19,118 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:34:19,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:34:19,119 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:34:19,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:34:19,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:34:19,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:34:19,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:34:19,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:34:19,120 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:34:19,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:34:19,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:34:19,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:34:19,121 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:34:19,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:34:19,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:34:19,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:34:19,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:34:19,122 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:34:19,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:34:19,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:34:19,123 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:34:19,149 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:34:19,161 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:34:19,165 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:34:19,166 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:34:19,166 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:34:19,167 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c [2019-09-10 01:34:19,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8751a837/7d52ae7e78844572933760c43e20a4e2/FLAGdb16d217e [2019-09-10 01:34:19,670 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:34:19,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c [2019-09-10 01:34:19,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8751a837/7d52ae7e78844572933760c43e20a4e2/FLAGdb16d217e [2019-09-10 01:34:20,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8751a837/7d52ae7e78844572933760c43e20a4e2 [2019-09-10 01:34:20,065 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:34:20,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:34:20,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:34:20,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:34:20,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:34:20,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:34:20" (1/1) ... [2019-09-10 01:34:20,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667f2660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:20, skipping insertion in model container [2019-09-10 01:34:20,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:34:20" (1/1) ... [2019-09-10 01:34:20,082 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:34:20,104 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:34:20,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:34:20,305 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:34:20,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:34:20,441 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:34:20,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:20 WrapperNode [2019-09-10 01:34:20,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:34:20,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:34:20,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:34:20,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:34:20,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:20" (1/1) ... [2019-09-10 01:34:20,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:20" (1/1) ... [2019-09-10 01:34:20,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:20" (1/1) ... [2019-09-10 01:34:20,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:20" (1/1) ... [2019-09-10 01:34:20,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:20" (1/1) ... [2019-09-10 01:34:20,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:20" (1/1) ... [2019-09-10 01:34:20,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:20" (1/1) ... [2019-09-10 01:34:20,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:34:20,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:34:20,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:34:20,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:34:20,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:20" (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 01:34:20,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:34:20,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:34:20,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:34:20,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:34:20,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-10 01:34:20,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 01:34:20,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:34:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:34:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:34:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-09-10 01:34:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-10 01:34:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:34:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:34:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:34:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-10 01:34:20,838 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:34:20,839 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 01:34:20,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:34:20 BoogieIcfgContainer [2019-09-10 01:34:20,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:34:20,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:34:20,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:34:20,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:34:20,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:34:20" (1/3) ... [2019-09-10 01:34:20,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1bb0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:34:20, skipping insertion in model container [2019-09-10 01:34:20,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:20" (2/3) ... [2019-09-10 01:34:20,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1bb0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:34:20, skipping insertion in model container [2019-09-10 01:34:20,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:34:20" (3/3) ... [2019-09-10 01:34:20,848 INFO L109 eAbstractionObserver]: Analyzing ICFG interpolation.c.p+cfa-reducer.c [2019-09-10 01:34:20,857 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:34:20,865 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:34:20,880 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:34:20,902 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:34:20,903 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:34:20,903 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:34:20,903 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:34:20,903 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:34:20,903 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:34:20,903 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:34:20,904 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:34:20,917 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-10 01:34:20,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-10 01:34:20,925 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:34:20,925 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:34:20,927 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:34:20,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:34:20,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1066142193, now seen corresponding path program 1 times [2019-09-10 01:34:20,935 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:34:20,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:20,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:20,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:20,986 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:34:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:21,102 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 01:34:21,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:34:21,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:34:21,106 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:34:21,116 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:34:21,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:34:21,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:34:21,136 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2019-09-10 01:34:21,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:34:21,205 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2019-09-10 01:34:21,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:34:21,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-09-10 01:34:21,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:34:21,222 INFO L225 Difference]: With dead ends: 27 [2019-09-10 01:34:21,222 INFO L226 Difference]: Without dead ends: 19 [2019-09-10 01:34:21,225 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 01:34:21,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-10 01:34:21,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-10 01:34:21,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-10 01:34:21,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-09-10 01:34:21,270 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 16 [2019-09-10 01:34:21,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:34:21,272 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-09-10 01:34:21,272 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:34:21,272 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-09-10 01:34:21,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-10 01:34:21,274 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:34:21,274 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:34:21,275 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:34:21,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:34:21,275 INFO L82 PathProgramCache]: Analyzing trace with hash 474733396, now seen corresponding path program 1 times [2019-09-10 01:34:21,276 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:34:21,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:21,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:21,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:21,278 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:34:21,327 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:34:21,328 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:34:21,328 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:34:21,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:21,368 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 01:34:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:21,389 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-10 01:34:21,390 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 01:34:21,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:34:21,390 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 01:34:21,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:21,413 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 01:34:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:21,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-10 01:34:21,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:34:21,493 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 01:34:21,494 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:34:21,519 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 01:34:21,524 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:34:21,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-09-10 01:34:21,525 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:34:21,526 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:34:21,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:34:21,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:34:21,527 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 4 states. [2019-09-10 01:34:21,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:34:21,557 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-09-10 01:34:21,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:34:21,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-09-10 01:34:21,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:34:21,559 INFO L225 Difference]: With dead ends: 21 [2019-09-10 01:34:21,559 INFO L226 Difference]: Without dead ends: 19 [2019-09-10 01:34:21,560 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 2 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 01:34:21,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-10 01:34:21,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-10 01:34:21,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-10 01:34:21,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-09-10 01:34:21,564 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2019-09-10 01:34:21,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:34:21,564 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-09-10 01:34:21,565 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:34:21,565 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-09-10 01:34:21,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-10 01:34:21,566 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:34:21,566 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:34:21,566 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:34:21,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:34:21,567 INFO L82 PathProgramCache]: Analyzing trace with hash 489837433, now seen corresponding path program 1 times [2019-09-10 01:34:21,567 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:34:21,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:21,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:21,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:21,568 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:34:21,587 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:34:21,588 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:34:21,588 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:34:21,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:21,601 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 01:34:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:21,620 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-10 01:34:21,621 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 01:34:21,621 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:34:21,621 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 01:34:21,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:21,644 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 01:34:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:21,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-10 01:34:21,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:34:21,687 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 01:34:21,688 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:34:21,709 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 01:34:21,713 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:34:21,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-09-10 01:34:21,713 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:34:21,714 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:34:21,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:34:21,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:34:21,714 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2019-09-10 01:34:21,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:34:21,744 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-09-10 01:34:21,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:34:21,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-09-10 01:34:21,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:34:21,747 INFO L225 Difference]: With dead ends: 22 [2019-09-10 01:34:21,747 INFO L226 Difference]: Without dead ends: 22 [2019-09-10 01:34:21,748 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:34:21,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-10 01:34:21,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-09-10 01:34:21,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-10 01:34:21,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-09-10 01:34:21,755 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2019-09-10 01:34:21,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:34:21,755 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-09-10 01:34:21,756 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:34:21,756 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-09-10 01:34:21,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 01:34:21,757 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:34:21,757 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:34:21,757 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:34:21,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:34:21,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1570839537, now seen corresponding path program 1 times [2019-09-10 01:34:21,758 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:34:21,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:21,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:21,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:21,759 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:34:21,776 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:34:21,777 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:34:21,777 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:34:21,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:21,789 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 01:34:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:21,806 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-10 01:34:21,806 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 01:34:21,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:34:21,806 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 01:34:21,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:21,834 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 01:34:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:21,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-10 01:34:21,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:34:22,005 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-10 01:34:22,006 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 33 [2019-09-10 01:34:22,008 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-10 01:34:22,029 INFO L567 ElimStorePlain]: treesize reduction 6, result has 80.6 percent of original size [2019-09-10 01:34:22,031 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-10 01:34:22,031 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:49, output treesize:21 [2019-09-10 01:34:22,057 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 01:34:22,057 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:34:22,075 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~main__z~0_8 Real)) (or (<= 0.0 v_main_~main__z~0_8) (not (<= (let ((.cse1 (* 4 c_main_~main__i~0))) (let ((.cse0 (* (- 1.0) (select (select |c_#memory_real| |c_main_~#main__min~0.base|) (+ |c_main_~#main__min~0.offset| .cse1))))) (/ (+ c_main_~main__t~0 .cse0) (+ (select (select |c_#memory_real| |c_main_~#main__max~0.base|) (+ |c_main_~#main__max~0.offset| .cse1)) .cse0)))) v_main_~main__z~0_8)))) is different from false [2019-09-10 01:34:22,497 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~main__z~0_8 Real)) (or (not (<= (let ((.cse0 (* (- 1.0) (select (select |c_#memory_real| |c_main_~#main__min~0.base|) |c_main_~#main__min~0.offset|)))) (/ (+ c_main_~main__t~0 .cse0) (+ (select (select |c_#memory_real| |c_main_~#main__max~0.base|) |c_main_~#main__max~0.offset|) .cse0))) v_main_~main__z~0_8)) (<= 0.0 v_main_~main__z~0_8))) is different from false [2019-09-10 01:34:22,506 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~main__t~0 Real) (v_main_~main__z~0_8 Real)) (or (< main_~main__t~0 |c_main_#t~mem1|) (not (<= (let ((.cse0 (* (- 1.0) (select (select |c_#memory_real| |c_main_~#main__min~0.base|) |c_main_~#main__min~0.offset|)))) (/ (+ main_~main__t~0 .cse0) (+ (select (select |c_#memory_real| |c_main_~#main__max~0.base|) |c_main_~#main__max~0.offset|) .cse0))) v_main_~main__z~0_8)) (<= 0.0 v_main_~main__z~0_8))) is different from false [2019-09-10 01:34:22,522 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 01:34:22,525 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:34:22,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-09-10 01:34:22,526 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:34:22,526 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 01:34:22,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 01:34:22,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=31, Unknown=3, NotChecked=36, Total=90 [2019-09-10 01:34:22,527 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2019-09-10 01:34:22,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:34:22,676 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2019-09-10 01:34:22,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 01:34:22,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-09-10 01:34:22,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:34:22,678 INFO L225 Difference]: With dead ends: 34 [2019-09-10 01:34:22,678 INFO L226 Difference]: Without dead ends: 34 [2019-09-10 01:34:22,679 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=49, Unknown=3, NotChecked=48, Total=132 [2019-09-10 01:34:22,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-09-10 01:34:22,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2019-09-10 01:34:22,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-10 01:34:22,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-09-10 01:34:22,683 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2019-09-10 01:34:22,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:34:22,683 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-09-10 01:34:22,683 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 01:34:22,684 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-09-10 01:34:22,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-10 01:34:22,684 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:34:22,684 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:34:22,685 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:34:22,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:34:22,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1911033608, now seen corresponding path program 1 times [2019-09-10 01:34:22,685 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:34:22,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:22,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:22,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:22,687 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:34:22,699 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:34:22,699 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:34:22,699 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:34:22,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:22,723 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 01:34:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:22,737 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-10 01:34:22,738 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 01:34:22,738 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:34:22,738 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 01:34:22,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:22,764 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 01:34:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:22,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-10 01:34:22,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:34:22,912 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-10 01:34:22,913 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 33 [2019-09-10 01:34:22,915 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-10 01:34:22,934 INFO L567 ElimStorePlain]: treesize reduction 6, result has 80.6 percent of original size [2019-09-10 01:34:22,935 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-10 01:34:22,936 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:49, output treesize:21 [2019-09-10 01:34:22,954 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 01:34:22,954 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:34:23,354 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~main__z~0_10 Real)) (or (not (>= (let ((.cse1 (* 4 c_main_~main__i~0))) (let ((.cse0 (* (- 1.0) (select (select |c_#memory_real| |c_main_~#main__min~0.base|) (+ |c_main_~#main__min~0.offset| .cse1))))) (/ (+ c_main_~main__t~0 .cse0) (+ (select (select |c_#memory_real| |c_main_~#main__max~0.base|) (+ |c_main_~#main__max~0.offset| .cse1)) .cse0)))) v_main_~main__z~0_10)) (<= v_main_~main__z~0_10 1.0))) is different from false [2019-09-10 01:34:23,781 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~main__t~0 Real) (v_main_~main__z~0_10 Real)) (or (not (>= (let ((.cse1 (* 4 c_main_~main__i~0))) (let ((.cse0 (* (- 1.0) (select (select |c_#memory_real| |c_main_~#main__min~0.base|) (+ |c_main_~#main__min~0.offset| .cse1))))) (/ (+ main_~main__t~0 .cse0) (+ (select (select |c_#memory_real| |c_main_~#main__max~0.base|) (+ |c_main_~#main__max~0.offset| .cse1)) .cse0)))) v_main_~main__z~0_10)) (< |c_main_#t~mem3| main_~main__t~0) (<= v_main_~main__z~0_10 1.0))) is different from false [2019-09-10 01:34:23,793 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~main__t~0 Real) (v_main_~main__z~0_10 Real)) (let ((.cse2 (* 4 c_main_~main__i~0))) (let ((.cse1 (select (select |c_#memory_real| |c_main_~#main__max~0.base|) (+ |c_main_~#main__max~0.offset| .cse2)))) (or (not (>= (let ((.cse0 (* (- 1.0) (select (select |c_#memory_real| |c_main_~#main__min~0.base|) (+ |c_main_~#main__min~0.offset| .cse2))))) (/ (+ main_~main__t~0 .cse0) (+ .cse1 .cse0))) v_main_~main__z~0_10)) (< .cse1 main_~main__t~0) (<= v_main_~main__z~0_10 1.0))))) is different from false [2019-09-10 01:34:24,234 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~main__t~0 Real) (v_main_~main__z~0_10 Real)) (let ((.cse1 (select (select |c_#memory_real| |c_main_~#main__max~0.base|) |c_main_~#main__max~0.offset|))) (or (not (>= (let ((.cse0 (* (- 1.0) (select (select |c_#memory_real| |c_main_~#main__min~0.base|) |c_main_~#main__min~0.offset|)))) (/ (+ main_~main__t~0 .cse0) (+ .cse1 .cse0))) v_main_~main__z~0_10)) (< .cse1 main_~main__t~0) (<= v_main_~main__z~0_10 1.0)))) is different from false [2019-09-10 01:34:24,264 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 01:34:24,270 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:34:24,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-09-10 01:34:24,271 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:34:24,271 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 01:34:24,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 01:34:24,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=40, Unknown=4, NotChecked=60, Total=132 [2019-09-10 01:34:24,272 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 7 states. [2019-09-10 01:34:24,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:34:24,391 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-09-10 01:34:24,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 01:34:24,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-09-10 01:34:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:34:24,393 INFO L225 Difference]: With dead ends: 29 [2019-09-10 01:34:24,393 INFO L226 Difference]: Without dead ends: 26 [2019-09-10 01:34:24,393 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=41, Invalid=61, Unknown=4, NotChecked=76, Total=182 [2019-09-10 01:34:24,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-10 01:34:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2019-09-10 01:34:24,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-10 01:34:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-09-10 01:34:24,396 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2019-09-10 01:34:24,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:34:24,397 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-09-10 01:34:24,397 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 01:34:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-09-10 01:34:24,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-10 01:34:24,397 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:34:24,398 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:34:24,398 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:34:24,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:34:24,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1625546753, now seen corresponding path program 1 times [2019-09-10 01:34:24,398 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:34:24,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:24,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:24,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:24,400 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:34:24,411 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:34:24,411 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:34:24,411 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-10 01:34:24,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:24,430 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:34:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:24,442 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2019-09-10 01:34:24,444 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [11], [15], [19], [24], [32], [35], [36], [41], [43], [45], [47], [57], [58], [59] [2019-09-10 01:34:24,479 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:34:24,479 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:34:24,536 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 01:34:24,538 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 18 root evaluator evaluations with a maximum evaluation depth of 0. Performed 18 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 32 variables. [2019-09-10 01:34:24,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:34:24,542 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 01:34:24,573 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-10 01:34:24,574 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 01:34:24,575 INFO L420 sIntCurrentIteration]: We unified 17 AI predicates to 17 [2019-09-10 01:34:24,575 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 01:34:24,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:34:24,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:34:24,576 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:34:24,577 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:34:24,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:34:24,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:34:24,577 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 2 states. [2019-09-10 01:34:24,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:34:24,578 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-10 01:34:24,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:34:24,578 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-09-10 01:34:24,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:34:24,579 INFO L225 Difference]: With dead ends: 6 [2019-09-10 01:34:24,579 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:34:24,579 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:34:24,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:34:24,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:34:24,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:34:24,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:34:24,580 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-09-10 01:34:24,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:34:24,580 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:34:24,580 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:34:24,580 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:34:24,581 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:34:24,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:34:24 BoogieIcfgContainer [2019-09-10 01:34:24,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:34:24,588 INFO L168 Benchmark]: Toolchain (without parser) took 4521.43 ms. Allocated memory was 135.3 MB in the beginning and 230.2 MB in the end (delta: 94.9 MB). Free memory was 90.3 MB in the beginning and 107.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 77.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:34:24,589 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 135.3 MB. Free memory was 109.8 MB in the beginning and 109.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:34:24,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.06 ms. Allocated memory was 135.3 MB in the beginning and 200.8 MB in the end (delta: 65.5 MB). Free memory was 90.1 MB in the beginning and 176.8 MB in the end (delta: -86.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:34:24,591 INFO L168 Benchmark]: Boogie Preprocessor took 35.30 ms. Allocated memory is still 200.8 MB. Free memory was 176.8 MB in the beginning and 175.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:34:24,592 INFO L168 Benchmark]: RCFGBuilder took 362.18 ms. Allocated memory is still 200.8 MB. Free memory was 175.1 MB in the beginning and 159.3 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-09-10 01:34:24,593 INFO L168 Benchmark]: TraceAbstraction took 3744.75 ms. Allocated memory was 200.8 MB in the beginning and 230.2 MB in the end (delta: 29.4 MB). Free memory was 158.7 MB in the beginning and 107.6 MB in the end (delta: 51.2 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. [2019-09-10 01:34:24,597 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 135.3 MB. Free memory was 109.8 MB in the beginning and 109.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 375.06 ms. Allocated memory was 135.3 MB in the beginning and 200.8 MB in the end (delta: 65.5 MB). Free memory was 90.1 MB in the beginning and 176.8 MB in the end (delta: -86.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.30 ms. Allocated memory is still 200.8 MB. Free memory was 176.8 MB in the beginning and 175.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 362.18 ms. Allocated memory is still 200.8 MB. Free memory was 175.1 MB in the beginning and 159.3 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3744.75 ms. Allocated memory was 200.8 MB in the beginning and 230.2 MB in the end (delta: 29.4 MB). Free memory was 158.7 MB in the beginning and 107.6 MB in the end (delta: 51.2 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: 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, 24 locations, 1 error locations. SAFE Result, 3.6s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 101 SDtfs, 65 SDslu, 154 SDs, 0 SdLazy, 79 SolverSat, 7 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 7 IntricatePredicates, 2 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9117647058823529 AbsIntWeakeningRatio, 1.411764705882353 AbsIntAvgWeakeningVarsNumRemoved, 0.6470588235294118 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 141 ConstructedInterpolants, 15 QuantifiedInterpolants, 17075 SizeOfPredicates, 24 NumberOfNonLiveVariables, 372 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...